Home / 28,507.55-39,341.70-15,932.30

Finding the Fourth Proportional to 28,507.55, 39,341.70 and 15,932.30

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Solution

The fourth proportional to 28,507.55, 39,341.70 and 15,932.30 is: 21,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.55 : 39,341.70 = 15,932.30 : x
  2. Step 2: Convert to fraction form
    28,507.55/39,341.70 = 15,932.30/x
  3. Step 3: Cross multiply
    28,507.55x = 39,341.70 × 15,932.30
  4. Step 4: Simplify right side
    28,507.55x = 626,803,570.20
  5. Step 5: Solve for x
    x = 626,803,570.20/28,507.55
  6. Step 6: Final answer
    x = 21,987.29

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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.