Home / 13,519.76-18,666.50-8,751.25

Finding the Fourth Proportional to 13,519.76, 18,666.50 and 8,751.25

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Solution

The fourth proportional to 13,519.76, 18,666.50 and 8,751.25 is: 12,082.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.76 : 18,666.50 = 8,751.25 : x
  2. Step 2: Convert to fraction form
    13,519.76/18,666.50 = 8,751.25/x
  3. Step 3: Cross multiply
    13,519.76x = 18,666.50 × 8,751.25
  4. Step 4: Simplify right side
    13,519.76x = 163,355,071.04
  5. Step 5: Solve for x
    x = 163,355,071.04/13,519.76
  6. Step 6: Final answer
    x = 12,082.69

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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.