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Finding the Fourth Proportional to 10,316.70, 15,482.07 and 9,702.18

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Solution

The fourth proportional to 10,316.70, 15,482.07 and 9,702.18 is: 14,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,316.70 : 15,482.07 = 9,702.18 : x
  2. Step 2: Convert to fraction form
    10,316.70/15,482.07 = 9,702.18/x
  3. Step 3: Cross multiply
    10,316.70x = 15,482.07 × 9,702.18
  4. Step 4: Simplify right side
    10,316.70x = 150,209,829.91
  5. Step 5: Solve for x
    x = 150,209,829.91/10,316.70
  6. Step 6: Final answer
    x = 14,559.87

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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.