Home / 20,807.01-28,714.10-11,376.18

Finding the Fourth Proportional to 20,807.01, 28,714.10 and 11,376.18

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Solution

The fourth proportional to 20,807.01, 28,714.10 and 11,376.18 is: 15,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.01 : 28,714.10 = 11,376.18 : x
  2. Step 2: Convert to fraction form
    20,807.01/28,714.10 = 11,376.18/x
  3. Step 3: Cross multiply
    20,807.01x = 28,714.10 × 11,376.18
  4. Step 4: Simplify right side
    20,807.01x = 326,656,713.26
  5. Step 5: Solve for x
    x = 326,656,713.26/20,807.01
  6. Step 6: Final answer
    x = 15,699.36

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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.