Home / 10,138,968.17-15,152,787.78-7,412,255.76

Finding the Fourth Proportional to 10,138,968.17, 15,152,787.78 and 7,412,255.76

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Solution

The fourth proportional to 10,138,968.17, 15,152,787.78 and 7,412,255.76 is: 11,077,689.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138,968.17 : 15,152,787.78 = 7,412,255.76 : x
  2. Step 2: Convert to fraction form
    10,138,968.17/15,152,787.78 = 7,412,255.76/x
  3. Step 3: Cross multiply
    10,138,968.17x = 15,152,787.78 × 7,412,255.76
  4. Step 4: Simplify right side
    10,138,968.17x = 112,316,338,502,362.61
  5. Step 5: Solve for x
    x = 112,316,338,502,362.61/10,138,968.17
  6. Step 6: Final answer
    x = 11,077,689.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.