Home / 28,372.47-42,478.70-15,015.21

Finding the Fourth Proportional to 28,372.47, 42,478.70 and 15,015.21

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Solution

The fourth proportional to 28,372.47, 42,478.70 and 15,015.21 is: 22,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.47 : 42,478.70 = 15,015.21 : x
  2. Step 2: Convert to fraction form
    28,372.47/42,478.70 = 15,015.21/x
  3. Step 3: Cross multiply
    28,372.47x = 42,478.70 × 15,015.21
  4. Step 4: Simplify right side
    28,372.47x = 637,826,525.95
  5. Step 5: Solve for x
    x = 637,826,525.95/28,372.47
  6. Step 6: Final answer
    x = 22,480.47

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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.