Home / 28,447.10-39,247.63-18,381.47

Finding the Fourth Proportional to 28,447.10, 39,247.63 and 18,381.47

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Solution

The fourth proportional to 28,447.10, 39,247.63 and 18,381.47 is: 25,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.10 : 39,247.63 = 18,381.47 : x
  2. Step 2: Convert to fraction form
    28,447.10/39,247.63 = 18,381.47/x
  3. Step 3: Cross multiply
    28,447.10x = 39,247.63 × 18,381.47
  4. Step 4: Simplify right side
    28,447.10x = 721,429,133.42
  5. Step 5: Solve for x
    x = 721,429,133.42/28,447.10
  6. Step 6: Final answer
    x = 25,360.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.