Home / 20,300.48-28,013.68-11,347.91

Finding the Fourth Proportional to 20,300.48, 28,013.68 and 11,347.91

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Solution

The fourth proportional to 20,300.48, 28,013.68 and 11,347.91 is: 15,659.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.48 : 28,013.68 = 11,347.91 : x
  2. Step 2: Convert to fraction form
    20,300.48/28,013.68 = 11,347.91/x
  3. Step 3: Cross multiply
    20,300.48x = 28,013.68 × 11,347.91
  4. Step 4: Simplify right side
    20,300.48x = 317,896,719.41
  5. Step 5: Solve for x
    x = 317,896,719.41/20,300.48
  6. Step 6: Final answer
    x = 15,659.57

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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.