Home / 15,209.55-20,988.47-8,493.84

Finding the Fourth Proportional to 15,209.55, 20,988.47 and 8,493.84

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Solution

The fourth proportional to 15,209.55, 20,988.47 and 8,493.84 is: 11,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.55 : 20,988.47 = 8,493.84 : x
  2. Step 2: Convert to fraction form
    15,209.55/20,988.47 = 8,493.84/x
  3. Step 3: Cross multiply
    15,209.55x = 20,988.47 × 8,493.84
  4. Step 4: Simplify right side
    15,209.55x = 178,272,663.56
  5. Step 5: Solve for x
    x = 178,272,663.56/15,209.55
  6. Step 6: Final answer
    x = 11,721.10

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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.