Home / 15,645.12-23,472.93-5,115.63

Finding the Fourth Proportional to 15,645.12, 23,472.93 and 5,115.63

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Solution

The fourth proportional to 15,645.12, 23,472.93 and 5,115.63 is: 7,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.12 : 23,472.93 = 5,115.63 : x
  2. Step 2: Convert to fraction form
    15,645.12/23,472.93 = 5,115.63/x
  3. Step 3: Cross multiply
    15,645.12x = 23,472.93 × 5,115.63
  4. Step 4: Simplify right side
    15,645.12x = 120,078,830.12
  5. Step 5: Solve for x
    x = 120,078,830.12/15,645.12
  6. Step 6: Final answer
    x = 7,675.16

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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.