Home / 18,685.89-25,787.07-10,729.53

Finding the Fourth Proportional to 18,685.89, 25,787.07 and 10,729.53

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Solution

The fourth proportional to 18,685.89, 25,787.07 and 10,729.53 is: 14,807.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.89 : 25,787.07 = 10,729.53 : x
  2. Step 2: Convert to fraction form
    18,685.89/25,787.07 = 10,729.53/x
  3. Step 3: Cross multiply
    18,685.89x = 25,787.07 × 10,729.53
  4. Step 4: Simplify right side
    18,685.89x = 276,683,141.18
  5. Step 5: Solve for x
    x = 276,683,141.18/18,685.89
  6. Step 6: Final answer
    x = 14,807.06

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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.