Home / 28,279.89-39,024.68-15,534.72

Finding the Fourth Proportional to 28,279.89, 39,024.68 and 15,534.72

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Solution

The fourth proportional to 28,279.89, 39,024.68 and 15,534.72 is: 21,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.89 : 39,024.68 = 15,534.72 : x
  2. Step 2: Convert to fraction form
    28,279.89/39,024.68 = 15,534.72/x
  3. Step 3: Cross multiply
    28,279.89x = 39,024.68 × 15,534.72
  4. Step 4: Simplify right side
    28,279.89x = 606,237,399.22
  5. Step 5: Solve for x
    x = 606,237,399.22/28,279.89
  6. Step 6: Final answer
    x = 21,437.05

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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.