Home / 22,039.79-30,417.68-13,657.55

Finding the Fourth Proportional to 22,039.79, 30,417.68 and 13,657.55

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Solution

The fourth proportional to 22,039.79, 30,417.68 and 13,657.55 is: 18,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,039.79 : 30,417.68 = 13,657.55 : x
  2. Step 2: Convert to fraction form
    22,039.79/30,417.68 = 13,657.55/x
  3. Step 3: Cross multiply
    22,039.79x = 30,417.68 × 13,657.55
  4. Step 4: Simplify right side
    22,039.79x = 415,430,867.54
  5. Step 5: Solve for x
    x = 415,430,867.54/22,039.79
  6. Step 6: Final answer
    x = 18,849.13

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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.