Home / 20,549.60-28,356.18-11,595.45

Finding the Fourth Proportional to 20,549.60, 28,356.18 and 11,595.45

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Solution

The fourth proportional to 20,549.60, 28,356.18 and 11,595.45 is: 16,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.60 : 28,356.18 = 11,595.45 : x
  2. Step 2: Convert to fraction form
    20,549.60/28,356.18 = 11,595.45/x
  3. Step 3: Cross multiply
    20,549.60x = 28,356.18 × 11,595.45
  4. Step 4: Simplify right side
    20,549.60x = 328,802,730.23
  5. Step 5: Solve for x
    x = 328,802,730.23/20,549.60
  6. Step 6: Final answer
    x = 16,000.45

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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.