Home / 21,275,273,897.40-31,912,910,846.10-12,459,305,436.60

Finding the Fourth Proportional to 21,275,273,897.40, 31,912,910,846.10 and 12,459,305,436.60

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Solution

The fourth proportional to 21,275,273,897.40, 31,912,910,846.10 and 12,459,305,436.60 is: 18,688,958,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,273,897.40 : 31,912,910,846.10 = 12,459,305,436.60 : x
  2. Step 2: Convert to fraction form
    21,275,273,897.40/31,912,910,846.10 = 12,459,305,436.60/x
  3. Step 3: Cross multiply
    21,275,273,897.40x = 31,912,910,846.10 × 12,459,305,436.60
  4. Step 4: Simplify right side
    21,275,273,897.40x = 397,612,703,602,544,803,840
  5. Step 5: Solve for x
    x = 397,612,703,602,544,803,840/21,275,273,897.40
  6. Step 6: Final answer
    x = 18,688,958,154.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.