Home / 10,418.76-15,646.59-9,988.23

Finding the Fourth Proportional to 10,418.76, 15,646.59 and 9,988.23

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Solution

The fourth proportional to 10,418.76, 15,646.59 and 9,988.23 is: 15,000.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.76 : 15,646.59 = 9,988.23 : x
  2. Step 2: Convert to fraction form
    10,418.76/15,646.59 = 9,988.23/x
  3. Step 3: Cross multiply
    10,418.76x = 15,646.59 × 9,988.23
  4. Step 4: Simplify right side
    10,418.76x = 156,281,739.64
  5. Step 5: Solve for x
    x = 156,281,739.64/10,418.76
  6. Step 6: Final answer
    x = 15,000.03

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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.