Home / 20,547,874.64-28,356,275.40-12,397,538

Finding the Fourth Proportional to 20,547,874.64, 28,356,275.40 and 12,397,538

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Solution

The fourth proportional to 20,547,874.64, 28,356,275.40 and 12,397,538 is: 17,108,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547,874.64 : 28,356,275.40 = 12,397,538 : x
  2. Step 2: Convert to fraction form
    20,547,874.64/28,356,275.40 = 12,397,538/x
  3. Step 3: Cross multiply
    20,547,874.64x = 28,356,275.40 × 12,397,538
  4. Step 4: Simplify right side
    20,547,874.64x = 351,548,001,809,965.19
  5. Step 5: Solve for x
    x = 351,548,001,809,965.19/20,547,874.64
  6. Step 6: Final answer
    x = 17,108,728.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.