Home / 15,386.28-21,233.07-8,671.92

Finding the Fourth Proportional to 15,386.28, 21,233.07 and 8,671.92

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Solution

The fourth proportional to 15,386.28, 21,233.07 and 8,671.92 is: 11,967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.28 : 21,233.07 = 8,671.92 : x
  2. Step 2: Convert to fraction form
    15,386.28/21,233.07 = 8,671.92/x
  3. Step 3: Cross multiply
    15,386.28x = 21,233.07 × 8,671.92
  4. Step 4: Simplify right side
    15,386.28x = 184,131,484.39
  5. Step 5: Solve for x
    x = 184,131,484.39/15,386.28
  6. Step 6: Final answer
    x = 11,967.25

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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.