Home / 10,970.46-15,139.30-6,721.53

Finding the Fourth Proportional to 10,970.46, 15,139.30 and 6,721.53

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Solution

The fourth proportional to 10,970.46, 15,139.30 and 6,721.53 is: 9,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.46 : 15,139.30 = 6,721.53 : x
  2. Step 2: Convert to fraction form
    10,970.46/15,139.30 = 6,721.53/x
  3. Step 3: Cross multiply
    10,970.46x = 15,139.30 × 6,721.53
  4. Step 4: Simplify right side
    10,970.46x = 101,759,210.76
  5. Step 5: Solve for x
    x = 101,759,210.76/10,970.46
  6. Step 6: Final answer
    x = 9,275.75

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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.