Home / 21,023.38-29,019.29-12,528.16

Finding the Fourth Proportional to 21,023.38, 29,019.29 and 12,528.16

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Solution

The fourth proportional to 21,023.38, 29,019.29 and 12,528.16 is: 17,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.38 : 29,019.29 = 12,528.16 : x
  2. Step 2: Convert to fraction form
    21,023.38/29,019.29 = 12,528.16/x
  3. Step 3: Cross multiply
    21,023.38x = 29,019.29 × 12,528.16
  4. Step 4: Simplify right side
    21,023.38x = 363,558,289.87
  5. Step 5: Solve for x
    x = 363,558,289.87/21,023.38
  6. Step 6: Final answer
    x = 17,293.05

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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.