Home / 48,278.08-72,408.75-13,209.40

Finding the Fourth Proportional to 48,278.08, 72,408.75 and 13,209.40

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Solution

The fourth proportional to 48,278.08, 72,408.75 and 13,209.40 is: 19,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,278.08 : 72,408.75 = 13,209.40 : x
  2. Step 2: Convert to fraction form
    48,278.08/72,408.75 = 13,209.40/x
  3. Step 3: Cross multiply
    48,278.08x = 72,408.75 × 13,209.40
  4. Step 4: Simplify right side
    48,278.08x = 956,476,142.25
  5. Step 5: Solve for x
    x = 956,476,142.25/48,278.08
  6. Step 6: Final answer
    x = 19,811.81

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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.