Home / 28,252.28-38,987.22-15,677.96

Finding the Fourth Proportional to 28,252.28, 38,987.22 and 15,677.96

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Solution

The fourth proportional to 28,252.28, 38,987.22 and 15,677.96 is: 21,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.28 : 38,987.22 = 15,677.96 : x
  2. Step 2: Convert to fraction form
    28,252.28/38,987.22 = 15,677.96/x
  3. Step 3: Cross multiply
    28,252.28x = 38,987.22 × 15,677.96
  4. Step 4: Simplify right side
    28,252.28x = 611,240,075.67
  5. Step 5: Solve for x
    x = 611,240,075.67/28,252.28
  6. Step 6: Final answer
    x = 21,635.07

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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.