Home / 20,924.60-31,357.74-15,724.40

Finding the Fourth Proportional to 20,924.60, 31,357.74 and 15,724.40

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Solution

The fourth proportional to 20,924.60, 31,357.74 and 15,724.40 is: 23,564.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.60 : 31,357.74 = 15,724.40 : x
  2. Step 2: Convert to fraction form
    20,924.60/31,357.74 = 15,724.40/x
  3. Step 3: Cross multiply
    20,924.60x = 31,357.74 × 15,724.40
  4. Step 4: Simplify right side
    20,924.60x = 493,081,646.86
  5. Step 5: Solve for x
    x = 493,081,646.86/20,924.60
  6. Step 6: Final answer
    x = 23,564.69

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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.