Home / 20,317.91-28,041.71-12,358.59

Finding the Fourth Proportional to 20,317.91, 28,041.71 and 12,358.59

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Solution

The fourth proportional to 20,317.91, 28,041.71 and 12,358.59 is: 17,056.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.91 : 28,041.71 = 12,358.59 : x
  2. Step 2: Convert to fraction form
    20,317.91/28,041.71 = 12,358.59/x
  3. Step 3: Cross multiply
    20,317.91x = 28,041.71 × 12,358.59
  4. Step 4: Simplify right side
    20,317.91x = 346,555,996.79
  5. Step 5: Solve for x
    x = 346,555,996.79/20,317.91
  6. Step 6: Final answer
    x = 17,056.68

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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.