Home / 15,171.81-20,937.14-8,799.63

Finding the Fourth Proportional to 15,171.81, 20,937.14 and 8,799.63

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Solution

The fourth proportional to 15,171.81, 20,937.14 and 8,799.63 is: 12,143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.81 : 20,937.14 = 8,799.63 : x
  2. Step 2: Convert to fraction form
    15,171.81/20,937.14 = 8,799.63/x
  3. Step 3: Cross multiply
    15,171.81x = 20,937.14 × 8,799.63
  4. Step 4: Simplify right side
    15,171.81x = 184,239,085.26
  5. Step 5: Solve for x
    x = 184,239,085.26/15,171.81
  6. Step 6: Final answer
    x = 12,143.51

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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.