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Finding the Fourth Proportional to 10,253.80, 15,348.30 and 9,929.80

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Solution

The fourth proportional to 10,253.80, 15,348.30 and 9,929.80 is: 14,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,253.80 : 15,348.30 = 9,929.80 : x
  2. Step 2: Convert to fraction form
    10,253.80/15,348.30 = 9,929.80/x
  3. Step 3: Cross multiply
    10,253.80x = 15,348.30 × 9,929.80
  4. Step 4: Simplify right side
    10,253.80x = 152,405,549.34
  5. Step 5: Solve for x
    x = 152,405,549.34/10,253.80
  6. Step 6: Final answer
    x = 14,863.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.