Home / 28,539.40-39,385.30-15,964.04

Finding the Fourth Proportional to 28,539.40, 39,385.30 and 15,964.04

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Solution

The fourth proportional to 28,539.40, 39,385.30 and 15,964.04 is: 22,030.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.40 : 39,385.30 = 15,964.04 : x
  2. Step 2: Convert to fraction form
    28,539.40/39,385.30 = 15,964.04/x
  3. Step 3: Cross multiply
    28,539.40x = 39,385.30 × 15,964.04
  4. Step 4: Simplify right side
    28,539.40x = 628,748,504.61
  5. Step 5: Solve for x
    x = 628,748,504.61/28,539.40
  6. Step 6: Final answer
    x = 22,030.89

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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.