Home / 28,279.17-39,027.06-15,703.92

Finding the Fourth Proportional to 28,279.17, 39,027.06 and 15,703.92

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Solution

The fourth proportional to 28,279.17, 39,027.06 and 15,703.92 is: 21,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.17 : 39,027.06 = 15,703.92 : x
  2. Step 2: Convert to fraction form
    28,279.17/39,027.06 = 15,703.92/x
  3. Step 3: Cross multiply
    28,279.17x = 39,027.06 × 15,703.92
  4. Step 4: Simplify right side
    28,279.17x = 612,877,828.08
  5. Step 5: Solve for x
    x = 612,877,828.08/28,279.17
  6. Step 6: Final answer
    x = 21,672.41

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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.