Home / 21,262,557.40-31,893,836.10-20,142,813.40

Finding the Fourth Proportional to 21,262,557.40, 31,893,836.10 and 20,142,813.40

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Solution

The fourth proportional to 21,262,557.40, 31,893,836.10 and 20,142,813.40 is: 30,214,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262,557.40 : 31,893,836.10 = 20,142,813.40 : x
  2. Step 2: Convert to fraction form
    21,262,557.40/31,893,836.10 = 20,142,813.40/x
  3. Step 3: Cross multiply
    21,262,557.40x = 31,893,836.10 × 20,142,813.40
  4. Step 4: Simplify right side
    21,262,557.40x = 642,431,589,172,483.75
  5. Step 5: Solve for x
    x = 642,431,589,172,483.75/21,262,557.40
  6. Step 6: Final answer
    x = 30,214,220.10

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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.