Home / 20,521.14-28,342.53-13,795.11

Finding the Fourth Proportional to 20,521.14, 28,342.53 and 13,795.11

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Solution

The fourth proportional to 20,521.14, 28,342.53 and 13,795.11 is: 19,052.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.14 : 28,342.53 = 13,795.11 : x
  2. Step 2: Convert to fraction form
    20,521.14/28,342.53 = 13,795.11/x
  3. Step 3: Cross multiply
    20,521.14x = 28,342.53 × 13,795.11
  4. Step 4: Simplify right side
    20,521.14x = 390,988,319.03
  5. Step 5: Solve for x
    x = 390,988,319.03/20,521.14
  6. Step 6: Final answer
    x = 19,052.95

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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.