Home / 20,535.36-28,337.04-11,581.08

Finding the Fourth Proportional to 20,535.36, 28,337.04 and 11,581.08

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Solution

The fourth proportional to 20,535.36, 28,337.04 and 11,581.08 is: 15,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.36 : 28,337.04 = 11,581.08 : x
  2. Step 2: Convert to fraction form
    20,535.36/28,337.04 = 11,581.08/x
  3. Step 3: Cross multiply
    20,535.36x = 28,337.04 × 11,581.08
  4. Step 4: Simplify right side
    20,535.36x = 328,173,527.20
  5. Step 5: Solve for x
    x = 328,173,527.20/20,535.36
  6. Step 6: Final answer
    x = 15,980.90

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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.