Home / 18,299.28-25,252.98-9,915.78

Finding the Fourth Proportional to 18,299.28, 25,252.98 and 9,915.78

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Solution

The fourth proportional to 18,299.28, 25,252.98 and 9,915.78 is: 13,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.28 : 25,252.98 = 9,915.78 : x
  2. Step 2: Convert to fraction form
    18,299.28/25,252.98 = 9,915.78/x
  3. Step 3: Cross multiply
    18,299.28x = 25,252.98 × 9,915.78
  4. Step 4: Simplify right side
    18,299.28x = 250,402,994.02
  5. Step 5: Solve for x
    x = 250,402,994.02/18,299.28
  6. Step 6: Final answer
    x = 13,683.76

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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.