Home / 28,157.40-42,231.54-9,437.22

Finding the Fourth Proportional to 28,157.40, 42,231.54 and 9,437.22

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Solution

The fourth proportional to 28,157.40, 42,231.54 and 9,437.22 is: 14,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.40 : 42,231.54 = 9,437.22 : x
  2. Step 2: Convert to fraction form
    28,157.40/42,231.54 = 9,437.22/x
  3. Step 3: Cross multiply
    28,157.40x = 42,231.54 × 9,437.22
  4. Step 4: Simplify right side
    28,157.40x = 398,548,333.92
  5. Step 5: Solve for x
    x = 398,548,333.92/28,157.40
  6. Step 6: Final answer
    x = 14,154.30

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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.