Home / 10,915.22-15,051.08-7,372.28

Finding the Fourth Proportional to 10,915.22, 15,051.08 and 7,372.28

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Solution

The fourth proportional to 10,915.22, 15,051.08 and 7,372.28 is: 10,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.22 : 15,051.08 = 7,372.28 : x
  2. Step 2: Convert to fraction form
    10,915.22/15,051.08 = 7,372.28/x
  3. Step 3: Cross multiply
    10,915.22x = 15,051.08 × 7,372.28
  4. Step 4: Simplify right side
    10,915.22x = 110,960,832.12
  5. Step 5: Solve for x
    x = 110,960,832.12/10,915.22
  6. Step 6: Final answer
    x = 10,165.70

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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.