Home / 28,178.52-38,883-16,245.76

Finding the Fourth Proportional to 28,178.52, 38,883 and 16,245.76

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Solution

The fourth proportional to 28,178.52, 38,883 and 16,245.76 is: 22,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.52 : 38,883 = 16,245.76 : x
  2. Step 2: Convert to fraction form
    28,178.52/38,883 = 16,245.76/x
  3. Step 3: Cross multiply
    28,178.52x = 38,883 × 16,245.76
  4. Step 4: Simplify right side
    28,178.52x = 631,683,886.08
  5. Step 5: Solve for x
    x = 631,683,886.08/28,178.52
  6. Step 6: Final answer
    x = 22,417.21

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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.