Home / 28,125.36-42,188.40-8,399.40

Finding the Fourth Proportional to 28,125.36, 42,188.40 and 8,399.40

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Solution

The fourth proportional to 28,125.36, 42,188.40 and 8,399.40 is: 12,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.36 : 42,188.40 = 8,399.40 : x
  2. Step 2: Convert to fraction form
    28,125.36/42,188.40 = 8,399.40/x
  3. Step 3: Cross multiply
    28,125.36x = 42,188.40 × 8,399.40
  4. Step 4: Simplify right side
    28,125.36x = 354,357,246.96
  5. Step 5: Solve for x
    x = 354,357,246.96/28,125.36
  6. Step 6: Final answer
    x = 12,599.21

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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.