Home / 18,298.65-25,233.15-15,654.81

Finding the Fourth Proportional to 18,298.65, 25,233.15 and 15,654.81

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Solution

The fourth proportional to 18,298.65, 25,233.15 and 15,654.81 is: 21,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.65 : 25,233.15 = 15,654.81 : x
  2. Step 2: Convert to fraction form
    18,298.65/25,233.15 = 15,654.81/x
  3. Step 3: Cross multiply
    18,298.65x = 25,233.15 × 15,654.81
  4. Step 4: Simplify right side
    18,298.65x = 395,020,090.68
  5. Step 5: Solve for x
    x = 395,020,090.68/18,298.65
  6. Step 6: Final answer
    x = 21,587.39

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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.