Home / 18,299.36-25,253.08-9,915.88

Finding the Fourth Proportional to 18,299.36, 25,253.08 and 9,915.88

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Solution

The fourth proportional to 18,299.36, 25,253.08 and 9,915.88 is: 13,683.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.36 : 25,253.08 = 9,915.88 : x
  2. Step 2: Convert to fraction form
    18,299.36/25,253.08 = 9,915.88/x
  3. Step 3: Cross multiply
    18,299.36x = 25,253.08 × 9,915.88
  4. Step 4: Simplify right side
    18,299.36x = 250,406,510.91
  5. Step 5: Solve for x
    x = 250,406,510.91/18,299.36
  6. Step 6: Final answer
    x = 13,683.89

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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.