Home / 10,721.90-14,796.20-6,530.15

Finding the Fourth Proportional to 10,721.90, 14,796.20 and 6,530.15

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Solution

The fourth proportional to 10,721.90, 14,796.20 and 6,530.15 is: 9,011.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.90 : 14,796.20 = 6,530.15 : x
  2. Step 2: Convert to fraction form
    10,721.90/14,796.20 = 6,530.15/x
  3. Step 3: Cross multiply
    10,721.90x = 14,796.20 × 6,530.15
  4. Step 4: Simplify right side
    10,721.90x = 96,621,298.80
  5. Step 5: Solve for x
    x = 96,621,298.80/10,721.90
  6. Step 6: Final answer
    x = 9,011.59

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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.