Home / 28,124.28-38,808.90-15,548.76

Finding the Fourth Proportional to 28,124.28, 38,808.90 and 15,548.76

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Solution

The fourth proportional to 28,124.28, 38,808.90 and 15,548.76 is: 21,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.28 : 38,808.90 = 15,548.76 : x
  2. Step 2: Convert to fraction form
    28,124.28/38,808.90 = 15,548.76/x
  3. Step 3: Cross multiply
    28,124.28x = 38,808.90 × 15,548.76
  4. Step 4: Simplify right side
    28,124.28x = 603,430,271.96
  5. Step 5: Solve for x
    x = 603,430,271.96/28,124.28
  6. Step 6: Final answer
    x = 21,455.85

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Half scale
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Double scale
Find fourth proportional to 28,125.28, 38,810.28 and 15,549.76
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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.