Home / 10,990.64-15,153.72-7,636.24

Finding the Fourth Proportional to 10,990.64, 15,153.72 and 7,636.24

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Solution

The fourth proportional to 10,990.64, 15,153.72 and 7,636.24 is: 10,528.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.64 : 15,153.72 = 7,636.24 : x
  2. Step 2: Convert to fraction form
    10,990.64/15,153.72 = 7,636.24/x
  3. Step 3: Cross multiply
    10,990.64x = 15,153.72 × 7,636.24
  4. Step 4: Simplify right side
    10,990.64x = 115,717,442.81
  5. Step 5: Solve for x
    x = 115,717,442.81/10,990.64
  6. Step 6: Final answer
    x = 10,528.73

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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.