Home / 15,381.24-23,064.57-7,978.29

Finding the Fourth Proportional to 15,381.24, 23,064.57 and 7,978.29

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Solution

The fourth proportional to 15,381.24, 23,064.57 and 7,978.29 is: 11,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.24 : 23,064.57 = 7,978.29 : x
  2. Step 2: Convert to fraction form
    15,381.24/23,064.57 = 7,978.29/x
  3. Step 3: Cross multiply
    15,381.24x = 23,064.57 × 7,978.29
  4. Step 4: Simplify right side
    15,381.24x = 184,015,828.19
  5. Step 5: Solve for x
    x = 184,015,828.19/15,381.24
  6. Step 6: Final answer
    x = 11,963.65

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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.