Home / 10,965.47-15,128.75-6,712.10

Finding the Fourth Proportional to 10,965.47, 15,128.75 and 6,712.10

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Solution

The fourth proportional to 10,965.47, 15,128.75 and 6,712.10 is: 9,260.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.47 : 15,128.75 = 6,712.10 : x
  2. Step 2: Convert to fraction form
    10,965.47/15,128.75 = 6,712.10/x
  3. Step 3: Cross multiply
    10,965.47x = 15,128.75 × 6,712.10
  4. Step 4: Simplify right side
    10,965.47x = 101,545,573.67
  5. Step 5: Solve for x
    x = 101,545,573.67/10,965.47
  6. Step 6: Final answer
    x = 9,260.49

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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.