Home / 11,402.40-15,730.84-6,621.53

Finding the Fourth Proportional to 11,402.40, 15,730.84 and 6,621.53

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Solution

The fourth proportional to 11,402.40, 15,730.84 and 6,621.53 is: 9,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,402.40 : 15,730.84 = 6,621.53 : x
  2. Step 2: Convert to fraction form
    11,402.40/15,730.84 = 6,621.53/x
  3. Step 3: Cross multiply
    11,402.40x = 15,730.84 × 6,621.53
  4. Step 4: Simplify right side
    11,402.40x = 104,162,133.78
  5. Step 5: Solve for x
    x = 104,162,133.78/11,402.40
  6. Step 6: Final answer
    x = 9,135.11

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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.