Home / 20,345.99-28,077.13-11,393.41

Finding the Fourth Proportional to 20,345.99, 28,077.13 and 11,393.41

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Solution

The fourth proportional to 20,345.99, 28,077.13 and 11,393.41 is: 15,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.99 : 28,077.13 = 11,393.41 : x
  2. Step 2: Convert to fraction form
    20,345.99/28,077.13 = 11,393.41/x
  3. Step 3: Cross multiply
    20,345.99x = 28,077.13 × 11,393.41
  4. Step 4: Simplify right side
    20,345.99x = 319,894,250.41
  5. Step 5: Solve for x
    x = 319,894,250.41/20,345.99
  6. Step 6: Final answer
    x = 15,722.72

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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.