Home / 21,001,868.80-31,506,302.40-8,222,790.40

Finding the Fourth Proportional to 21,001,868.80, 31,506,302.40 and 8,222,790.40

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Solution

The fourth proportional to 21,001,868.80, 31,506,302.40 and 8,222,790.40 is: 12,335,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,868.80 : 31,506,302.40 = 8,222,790.40 : x
  2. Step 2: Convert to fraction form
    21,001,868.80/31,506,302.40 = 8,222,790.40/x
  3. Step 3: Cross multiply
    21,001,868.80x = 31,506,302.40 × 8,222,790.40
  4. Step 4: Simplify right side
    21,001,868.80x = 259,069,720,914,216.97
  5. Step 5: Solve for x
    x = 259,069,720,914,216.97/21,001,868.80
  6. Step 6: Final answer
    x = 12,335,555.63

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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.