Home / 20,693.12-28,529.82-15,036.08

Finding the Fourth Proportional to 20,693.12, 28,529.82 and 15,036.08

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Solution

The fourth proportional to 20,693.12, 28,529.82 and 15,036.08 is: 20,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.12 : 28,529.82 = 15,036.08 : x
  2. Step 2: Convert to fraction form
    20,693.12/28,529.82 = 15,036.08/x
  3. Step 3: Cross multiply
    20,693.12x = 28,529.82 × 15,036.08
  4. Step 4: Simplify right side
    20,693.12x = 428,976,655.91
  5. Step 5: Solve for x
    x = 428,976,655.91/20,693.12
  6. Step 6: Final answer
    x = 20,730.40

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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.