Home / 12,920,076-17,824,102.90-7,690,151.43

Finding the Fourth Proportional to 12,920,076, 17,824,102.90 and 7,690,151.43

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Solution

The fourth proportional to 12,920,076, 17,824,102.90 and 7,690,151.43 is: 10,609,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,076 : 17,824,102.90 = 7,690,151.43 : x
  2. Step 2: Convert to fraction form
    12,920,076/17,824,102.90 = 7,690,151.43/x
  3. Step 3: Cross multiply
    12,920,076x = 17,824,102.90 × 7,690,151.43
  4. Step 4: Simplify right side
    12,920,076x = 137,070,050,404,902.12
  5. Step 5: Solve for x
    x = 137,070,050,404,902.12/12,920,076
  6. Step 6: Final answer
    x = 10,609,074.62

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1.5x scale

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.