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Finding the Fourth Proportional to 15,152.50, 20,912.61 and 14,488.30

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Solution

The fourth proportional to 15,152.50, 20,912.61 and 14,488.30 is: 19,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.50 : 20,912.61 = 14,488.30 : x
  2. Step 2: Convert to fraction form
    15,152.50/20,912.61 = 14,488.30/x
  3. Step 3: Cross multiply
    15,152.50x = 20,912.61 × 14,488.30
  4. Step 4: Simplify right side
    15,152.50x = 302,988,167.46
  5. Step 5: Solve for x
    x = 302,988,167.46/15,152.50
  6. Step 6: Final answer
    x = 19,995.92

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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.