Home / 20,319.60-30,479.40-9,924.06

Finding the Fourth Proportional to 20,319.60, 30,479.40 and 9,924.06

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Solution

The fourth proportional to 20,319.60, 30,479.40 and 9,924.06 is: 14,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.60 : 30,479.40 = 9,924.06 : x
  2. Step 2: Convert to fraction form
    20,319.60/30,479.40 = 9,924.06/x
  3. Step 3: Cross multiply
    20,319.60x = 30,479.40 × 9,924.06
  4. Step 4: Simplify right side
    20,319.60x = 302,479,394.36
  5. Step 5: Solve for x
    x = 302,479,394.36/20,319.60
  6. Step 6: Final answer
    x = 14,886.09

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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.