Home / 9,988.42-13,778.49-7,008.70

Finding the Fourth Proportional to 9,988.42, 13,778.49 and 7,008.70

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Solution

The fourth proportional to 9,988.42, 13,778.49 and 7,008.70 is: 9,668.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.42 : 13,778.49 = 7,008.70 : x
  2. Step 2: Convert to fraction form
    9,988.42/13,778.49 = 7,008.70/x
  3. Step 3: Cross multiply
    9,988.42x = 13,778.49 × 7,008.70
  4. Step 4: Simplify right side
    9,988.42x = 96,569,302.86
  5. Step 5: Solve for x
    x = 96,569,302.86/9,988.42
  6. Step 6: Final answer
    x = 9,668.13

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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.