Home / 18,387.96-25,346.70-15,398.52

Finding the Fourth Proportional to 18,387.96, 25,346.70 and 15,398.52

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Solution

The fourth proportional to 18,387.96, 25,346.70 and 15,398.52 is: 21,225.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.96 : 25,346.70 = 15,398.52 : x
  2. Step 2: Convert to fraction form
    18,387.96/25,346.70 = 15,398.52/x
  3. Step 3: Cross multiply
    18,387.96x = 25,346.70 × 15,398.52
  4. Step 4: Simplify right side
    18,387.96x = 390,301,666.88
  5. Step 5: Solve for x
    x = 390,301,666.88/18,387.96
  6. Step 6: Final answer
    x = 21,225.94

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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.