Home / 28,543.82-39,389.85-15,623.04

Finding the Fourth Proportional to 28,543.82, 39,389.85 and 15,623.04

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Solution

The fourth proportional to 28,543.82, 39,389.85 and 15,623.04 is: 21,559.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.82 : 39,389.85 = 15,623.04 : x
  2. Step 2: Convert to fraction form
    28,543.82/39,389.85 = 15,623.04/x
  3. Step 3: Cross multiply
    28,543.82x = 39,389.85 × 15,623.04
  4. Step 4: Simplify right side
    28,543.82x = 615,389,202.14
  5. Step 5: Solve for x
    x = 615,389,202.14/28,543.82
  6. Step 6: Final answer
    x = 21,559.45

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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.