Home / 28,430.08-42,645.12-8,708.56

Finding the Fourth Proportional to 28,430.08, 42,645.12 and 8,708.56

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Solution

The fourth proportional to 28,430.08, 42,645.12 and 8,708.56 is: 13,062.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.08 : 42,645.12 = 8,708.56 : x
  2. Step 2: Convert to fraction form
    28,430.08/42,645.12 = 8,708.56/x
  3. Step 3: Cross multiply
    28,430.08x = 42,645.12 × 8,708.56
  4. Step 4: Simplify right side
    28,430.08x = 371,377,586.23
  5. Step 5: Solve for x
    x = 371,377,586.23/28,430.08
  6. Step 6: Final answer
    x = 13,062.84

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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.