Home / 28,352.82-39,127.20-15,607.46

Finding the Fourth Proportional to 28,352.82, 39,127.20 and 15,607.46

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Solution

The fourth proportional to 28,352.82, 39,127.20 and 15,607.46 is: 21,538.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.82 : 39,127.20 = 15,607.46 : x
  2. Step 2: Convert to fraction form
    28,352.82/39,127.20 = 15,607.46/x
  3. Step 3: Cross multiply
    28,352.82x = 39,127.20 × 15,607.46
  4. Step 4: Simplify right side
    28,352.82x = 610,676,208.91
  5. Step 5: Solve for x
    x = 610,676,208.91/28,352.82
  6. Step 6: Final answer
    x = 21,538.46

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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.