Home / 13,519.91-18,657.28-7,551.67

Finding the Fourth Proportional to 13,519.91, 18,657.28 and 7,551.67

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Solution

The fourth proportional to 13,519.91, 18,657.28 and 7,551.67 is: 10,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.91 : 18,657.28 = 7,551.67 : x
  2. Step 2: Convert to fraction form
    13,519.91/18,657.28 = 7,551.67/x
  3. Step 3: Cross multiply
    13,519.91x = 18,657.28 × 7,551.67
  4. Step 4: Simplify right side
    13,519.91x = 140,893,621.66
  5. Step 5: Solve for x
    x = 140,893,621.66/13,519.91
  6. Step 6: Final answer
    x = 10,421.20

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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.