Home / 28,215.83-38,988.60-20,244.08

Finding the Fourth Proportional to 28,215.83, 38,988.60 and 20,244.08

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Solution

The fourth proportional to 28,215.83, 38,988.60 and 20,244.08 is: 27,973.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.83 : 38,988.60 = 20,244.08 : x
  2. Step 2: Convert to fraction form
    28,215.83/38,988.60 = 20,244.08/x
  3. Step 3: Cross multiply
    28,215.83x = 38,988.60 × 20,244.08
  4. Step 4: Simplify right side
    28,215.83x = 789,288,337.49
  5. Step 5: Solve for x
    x = 789,288,337.49/28,215.83
  6. Step 6: Final answer
    x = 27,973.25

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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.