Home / 18,639.37-25,724.15-13,915.45

Finding the Fourth Proportional to 18,639.37, 25,724.15 and 13,915.45

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Solution

The fourth proportional to 18,639.37, 25,724.15 and 13,915.45 is: 19,204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.37 : 25,724.15 = 13,915.45 : x
  2. Step 2: Convert to fraction form
    18,639.37/25,724.15 = 13,915.45/x
  3. Step 3: Cross multiply
    18,639.37x = 25,724.15 × 13,915.45
  4. Step 4: Simplify right side
    18,639.37x = 357,963,123.12
  5. Step 5: Solve for x
    x = 357,963,123.12/18,639.37
  6. Step 6: Final answer
    x = 19,204.68

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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.