Home / 28,160.72-42,242.48-8,437.40

Finding the Fourth Proportional to 28,160.72, 42,242.48 and 8,437.40

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Solution

The fourth proportional to 28,160.72, 42,242.48 and 8,437.40 is: 12,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.72 : 42,242.48 = 8,437.40 : x
  2. Step 2: Convert to fraction form
    28,160.72/42,242.48 = 8,437.40/x
  3. Step 3: Cross multiply
    28,160.72x = 42,242.48 × 8,437.40
  4. Step 4: Simplify right side
    28,160.72x = 356,416,700.75
  5. Step 5: Solve for x
    x = 356,416,700.75/28,160.72
  6. Step 6: Final answer
    x = 12,656.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.