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Finding the Fourth Proportional to 25,889,612.80, 38,859,302.40 and 13,124,531.20

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Solution

The fourth proportional to 25,889,612.80, 38,859,302.40 and 13,124,531.20 is: 19,699,411.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,889,612.80 : 38,859,302.40 = 13,124,531.20 : x
  2. Step 2: Convert to fraction form
    25,889,612.80/38,859,302.40 = 13,124,531.20/x
  3. Step 3: Cross multiply
    25,889,612.80x = 38,859,302.40 × 13,124,531.20
  4. Step 4: Simplify right side
    25,889,612.80x = 510,010,126,759,034.81
  5. Step 5: Solve for x
    x = 510,010,126,759,034.81/25,889,612.80
  6. Step 6: Final answer
    x = 19,699,411.14

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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.