Home / 28,040.04-42,060.15-8,318.75

Finding the Fourth Proportional to 28,040.04, 42,060.15 and 8,318.75

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Solution

The fourth proportional to 28,040.04, 42,060.15 and 8,318.75 is: 12,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.04 : 42,060.15 = 8,318.75 : x
  2. Step 2: Convert to fraction form
    28,040.04/42,060.15 = 8,318.75/x
  3. Step 3: Cross multiply
    28,040.04x = 42,060.15 × 8,318.75
  4. Step 4: Simplify right side
    28,040.04x = 349,887,662.51
  5. Step 5: Solve for x
    x = 349,887,662.51/28,040.04
  6. Step 6: Final answer
    x = 12,478.14

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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.