Home / 20,484.90-28,271.85-11,534.15

Finding the Fourth Proportional to 20,484.90, 28,271.85 and 11,534.15

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Solution

The fourth proportional to 20,484.90, 28,271.85 and 11,534.15 is: 15,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.90 : 28,271.85 = 11,534.15 : x
  2. Step 2: Convert to fraction form
    20,484.90/28,271.85 = 11,534.15/x
  3. Step 3: Cross multiply
    20,484.90x = 28,271.85 × 11,534.15
  4. Step 4: Simplify right side
    20,484.90x = 326,091,758.68
  5. Step 5: Solve for x
    x = 326,091,758.68/20,484.90
  6. Step 6: Final answer
    x = 15,918.64

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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.