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Finding the Fourth Proportional to 9,915.13, 14,875.17 and 6,999.13

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Solution

The fourth proportional to 9,915.13, 14,875.17 and 6,999.13 is: 10,500.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.13 : 14,875.17 = 6,999.13 : x
  2. Step 2: Convert to fraction form
    9,915.13/14,875.17 = 6,999.13/x
  3. Step 3: Cross multiply
    9,915.13x = 14,875.17 × 6,999.13
  4. Step 4: Simplify right side
    9,915.13x = 104,113,248.60
  5. Step 5: Solve for x
    x = 104,113,248.60/9,915.13
  6. Step 6: Final answer
    x = 10,500.44

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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.