Home / 28,638.28-39,502.65-20,692.18

Finding the Fourth Proportional to 28,638.28, 39,502.65 and 20,692.18

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Solution

The fourth proportional to 28,638.28, 39,502.65 and 20,692.18 is: 28,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.28 : 39,502.65 = 20,692.18 : x
  2. Step 2: Convert to fraction form
    28,638.28/39,502.65 = 20,692.18/x
  3. Step 3: Cross multiply
    28,638.28x = 39,502.65 × 20,692.18
  4. Step 4: Simplify right side
    28,638.28x = 817,395,944.28
  5. Step 5: Solve for x
    x = 817,395,944.28/28,638.28
  6. Step 6: Final answer
    x = 28,542.08

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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.