Home / 10,155.24-15,215.43-9,128.07

Finding the Fourth Proportional to 10,155.24, 15,215.43 and 9,128.07

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Solution

The fourth proportional to 10,155.24, 15,215.43 and 9,128.07 is: 13,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.24 : 15,215.43 = 9,128.07 : x
  2. Step 2: Convert to fraction form
    10,155.24/15,215.43 = 9,128.07/x
  3. Step 3: Cross multiply
    10,155.24x = 15,215.43 × 9,128.07
  4. Step 4: Simplify right side
    10,155.24x = 138,887,510.12
  5. Step 5: Solve for x
    x = 138,887,510.12/10,155.24
  6. Step 6: Final answer
    x = 13,676.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.