Home / 18,381,969.72-25,366,124.70-10,120,423.32

Finding the Fourth Proportional to 18,381,969.72, 25,366,124.70 and 10,120,423.32

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Solution

The fourth proportional to 18,381,969.72, 25,366,124.70 and 10,120,423.32 is: 13,965,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381,969.72 : 25,366,124.70 = 10,120,423.32 : x
  2. Step 2: Convert to fraction form
    18,381,969.72/25,366,124.70 = 10,120,423.32/x
  3. Step 3: Cross multiply
    18,381,969.72x = 25,366,124.70 × 10,120,423.32
  4. Step 4: Simplify right side
    18,381,969.72x = 256,715,919,951,908
  5. Step 5: Solve for x
    x = 256,715,919,951,908/18,381,969.72
  6. Step 6: Final answer
    x = 13,965,637.19

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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.