Home / 13,754,372.40-18,981,036.72-7,642,800.90

Finding the Fourth Proportional to 13,754,372.40, 18,981,036.72 and 7,642,800.90

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Solution

The fourth proportional to 13,754,372.40, 18,981,036.72 and 7,642,800.90 is: 10,547,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754,372.40 : 18,981,036.72 = 7,642,800.90 : x
  2. Step 2: Convert to fraction form
    13,754,372.40/18,981,036.72 = 7,642,800.90/x
  3. Step 3: Cross multiply
    13,754,372.40x = 18,981,036.72 × 7,642,800.90
  4. Step 4: Simplify right side
    13,754,372.40x = 145,068,284,526,549.03
  5. Step 5: Solve for x
    x = 145,068,284,526,549.03/13,754,372.40
  6. Step 6: Final answer
    x = 10,547,066.80

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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.