Home / 25,788,142.40-38,691,736.80-10,643,387.20

Finding the Fourth Proportional to 25,788,142.40, 38,691,736.80 and 10,643,387.20

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Solution

The fourth proportional to 25,788,142.40, 38,691,736.80 and 10,643,387.20 is: 15,969,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,788,142.40 : 38,691,736.80 = 10,643,387.20 : x
  2. Step 2: Convert to fraction form
    25,788,142.40/38,691,736.80 = 10,643,387.20/x
  3. Step 3: Cross multiply
    25,788,142.40x = 38,691,736.80 × 10,643,387.20
  4. Step 4: Simplify right side
    25,788,142.40x = 411,811,136,202,888.88
  5. Step 5: Solve for x
    x = 411,811,136,202,888.88/25,788,142.40
  6. Step 6: Final answer
    x = 15,969,011.25

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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.