Home / 15,385.51-21,233.17-8,671.77

Finding the Fourth Proportional to 15,385.51, 21,233.17 and 8,671.77

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Solution

The fourth proportional to 15,385.51, 21,233.17 and 8,671.77 is: 11,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.51 : 21,233.17 = 8,671.77 : x
  2. Step 2: Convert to fraction form
    15,385.51/21,233.17 = 8,671.77/x
  3. Step 3: Cross multiply
    15,385.51x = 21,233.17 × 8,671.77
  4. Step 4: Simplify right side
    15,385.51x = 184,129,177.45
  5. Step 5: Solve for x
    x = 184,129,177.45/15,385.51
  6. Step 6: Final answer
    x = 11,967.70

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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.