Home / 10,117.80-15,176.70-9,680.40

Finding the Fourth Proportional to 10,117.80, 15,176.70 and 9,680.40

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Solution

The fourth proportional to 10,117.80, 15,176.70 and 9,680.40 is: 14,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.80 : 15,176.70 = 9,680.40 : x
  2. Step 2: Convert to fraction form
    10,117.80/15,176.70 = 9,680.40/x
  3. Step 3: Cross multiply
    10,117.80x = 15,176.70 × 9,680.40
  4. Step 4: Simplify right side
    10,117.80x = 146,916,526.68
  5. Step 5: Solve for x
    x = 146,916,526.68/10,117.80
  6. Step 6: Final answer
    x = 14,520.60

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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.