Home / 20,637.60-30,956.40-5,055.12

Finding the Fourth Proportional to 20,637.60, 30,956.40 and 5,055.12

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Solution

The fourth proportional to 20,637.60, 30,956.40 and 5,055.12 is: 7,582.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.60 : 30,956.40 = 5,055.12 : x
  2. Step 2: Convert to fraction form
    20,637.60/30,956.40 = 5,055.12/x
  3. Step 3: Cross multiply
    20,637.60x = 30,956.40 × 5,055.12
  4. Step 4: Simplify right side
    20,637.60x = 156,488,316.77
  5. Step 5: Solve for x
    x = 156,488,316.77/20,637.60
  6. Step 6: Final answer
    x = 7,582.68

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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.