Home / 48,479.38-72,720.32-13,419.34

Finding the Fourth Proportional to 48,479.38, 72,720.32 and 13,419.34

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Solution

The fourth proportional to 48,479.38, 72,720.32 and 13,419.34 is: 20,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,479.38 : 72,720.32 = 13,419.34 : x
  2. Step 2: Convert to fraction form
    48,479.38/72,720.32 = 13,419.34/x
  3. Step 3: Cross multiply
    48,479.38x = 72,720.32 × 13,419.34
  4. Step 4: Simplify right side
    48,479.38x = 975,858,450.09
  5. Step 5: Solve for x
    x = 975,858,450.09/48,479.38
  6. Step 6: Final answer
    x = 20,129.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.