Home / 18,685.32-25,787.30-10,729.10

Finding the Fourth Proportional to 18,685.32, 25,787.30 and 10,729.10

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Solution

The fourth proportional to 18,685.32, 25,787.30 and 10,729.10 is: 14,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.32 : 25,787.30 = 10,729.10 : x
  2. Step 2: Convert to fraction form
    18,685.32/25,787.30 = 10,729.10/x
  3. Step 3: Cross multiply
    18,685.32x = 25,787.30 × 10,729.10
  4. Step 4: Simplify right side
    18,685.32x = 276,674,520.43
  5. Step 5: Solve for x
    x = 276,674,520.43/18,685.32
  6. Step 6: Final answer
    x = 14,807.05

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1.5x scale

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.