Home / 15,765.60-23,648.40-13,000.80

Finding the Fourth Proportional to 15,765.60, 23,648.40 and 13,000.80

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Solution

The fourth proportional to 15,765.60, 23,648.40 and 13,000.80 is: 19,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.60 : 23,648.40 = 13,000.80 : x
  2. Step 2: Convert to fraction form
    15,765.60/23,648.40 = 13,000.80/x
  3. Step 3: Cross multiply
    15,765.60x = 23,648.40 × 13,000.80
  4. Step 4: Simplify right side
    15,765.60x = 307,448,118.72
  5. Step 5: Solve for x
    x = 307,448,118.72/15,765.60
  6. Step 6: Final answer
    x = 19,501.20

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Half scale
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Double scale
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Similar ratio
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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.