Home / 13,659.52-18,851.74-8,281.90

Finding the Fourth Proportional to 13,659.52, 18,851.74 and 8,281.90

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Solution

The fourth proportional to 13,659.52, 18,851.74 and 8,281.90 is: 11,429.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.52 : 18,851.74 = 8,281.90 : x
  2. Step 2: Convert to fraction form
    13,659.52/18,851.74 = 8,281.90/x
  3. Step 3: Cross multiply
    13,659.52x = 18,851.74 × 8,281.90
  4. Step 4: Simplify right side
    13,659.52x = 156,128,225.51
  5. Step 5: Solve for x
    x = 156,128,225.51/13,659.52
  6. Step 6: Final answer
    x = 11,429.99

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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.