Home / 20,641.16-28,484.85-11,209.52

Finding the Fourth Proportional to 20,641.16, 28,484.85 and 11,209.52

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Solution

The fourth proportional to 20,641.16, 28,484.85 and 11,209.52 is: 15,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.16 : 28,484.85 = 11,209.52 : x
  2. Step 2: Convert to fraction form
    20,641.16/28,484.85 = 11,209.52/x
  3. Step 3: Cross multiply
    20,641.16x = 28,484.85 × 11,209.52
  4. Step 4: Simplify right side
    20,641.16x = 319,301,353.35
  5. Step 5: Solve for x
    x = 319,301,353.35/20,641.16
  6. Step 6: Final answer
    x = 15,469.16

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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.