Home / 10,629.76-14,689.30-7,972.56

Finding the Fourth Proportional to 10,629.76, 14,689.30 and 7,972.56

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Solution

The fourth proportional to 10,629.76, 14,689.30 and 7,972.56 is: 11,017.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,629.76 : 14,689.30 = 7,972.56 : x
  2. Step 2: Convert to fraction form
    10,629.76/14,689.30 = 7,972.56/x
  3. Step 3: Cross multiply
    10,629.76x = 14,689.30 × 7,972.56
  4. Step 4: Simplify right side
    10,629.76x = 117,111,325.61
  5. Step 5: Solve for x
    x = 117,111,325.61/10,629.76
  6. Step 6: Final answer
    x = 11,017.31

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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.