Home / 13,320.19-18,384.20-7,656.67

Finding the Fourth Proportional to 13,320.19, 18,384.20 and 7,656.67

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Solution

The fourth proportional to 13,320.19, 18,384.20 and 7,656.67 is: 10,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.19 : 18,384.20 = 7,656.67 : x
  2. Step 2: Convert to fraction form
    13,320.19/18,384.20 = 7,656.67/x
  3. Step 3: Cross multiply
    13,320.19x = 18,384.20 × 7,656.67
  4. Step 4: Simplify right side
    13,320.19x = 140,761,714.33
  5. Step 5: Solve for x
    x = 140,761,714.33/13,320.19
  6. Step 6: Final answer
    x = 10,567.55

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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.