Home / 23,390.40-32,279.22-12,780.48

Finding the Fourth Proportional to 23,390.40, 32,279.22 and 12,780.48

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Solution

The fourth proportional to 23,390.40, 32,279.22 and 12,780.48 is: 17,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,390.40 : 32,279.22 = 12,780.48 : x
  2. Step 2: Convert to fraction form
    23,390.40/32,279.22 = 12,780.48/x
  3. Step 3: Cross multiply
    23,390.40x = 32,279.22 × 12,780.48
  4. Step 4: Simplify right side
    23,390.40x = 412,543,925.63
  5. Step 5: Solve for x
    x = 412,543,925.63/23,390.40
  6. Step 6: Final answer
    x = 17,637.32

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Half 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.