Home / 20,807.38-28,714.18-13,368.34

Finding the Fourth Proportional to 20,807.38, 28,714.18 and 13,368.34

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Solution

The fourth proportional to 20,807.38, 28,714.18 and 13,368.34 is: 18,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.38 : 28,714.18 = 13,368.34 : x
  2. Step 2: Convert to fraction form
    20,807.38/28,714.18 = 13,368.34/x
  3. Step 3: Cross multiply
    20,807.38x = 28,714.18 × 13,368.34
  4. Step 4: Simplify right side
    20,807.38x = 383,860,744.07
  5. Step 5: Solve for x
    x = 383,860,744.07/20,807.38
  6. Step 6: Final answer
    x = 18,448.30

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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.