Home / 18,925.47-28,387.95-5,777.88

Finding the Fourth Proportional to 18,925.47, 28,387.95 and 5,777.88

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Solution

The fourth proportional to 18,925.47, 28,387.95 and 5,777.88 is: 8,666.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.47 : 28,387.95 = 5,777.88 : x
  2. Step 2: Convert to fraction form
    18,925.47/28,387.95 = 5,777.88/x
  3. Step 3: Cross multiply
    18,925.47x = 28,387.95 × 5,777.88
  4. Step 4: Simplify right side
    18,925.47x = 164,022,168.55
  5. Step 5: Solve for x
    x = 164,022,168.55/18,925.47
  6. Step 6: Final answer
    x = 8,666.74

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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.