Home / 20,504.40-28,298.76-11,553.63

Finding the Fourth Proportional to 20,504.40, 28,298.76 and 11,553.63

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Solution

The fourth proportional to 20,504.40, 28,298.76 and 11,553.63 is: 15,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.40 : 28,298.76 = 11,553.63 : x
  2. Step 2: Convert to fraction form
    20,504.40/28,298.76 = 11,553.63/x
  3. Step 3: Cross multiply
    20,504.40x = 28,298.76 × 11,553.63
  4. Step 4: Simplify right side
    20,504.40x = 326,953,402.50
  5. Step 5: Solve for x
    x = 326,953,402.50/20,504.40
  6. Step 6: Final answer
    x = 15,945.52

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Half scale
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Double scale
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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.