Home / 14,721.76-20,315.86-10,961.74

Finding the Fourth Proportional to 14,721.76, 20,315.86 and 10,961.74

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Solution

The fourth proportional to 14,721.76, 20,315.86 and 10,961.74 is: 15,127.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.76 : 20,315.86 = 10,961.74 : x
  2. Step 2: Convert to fraction form
    14,721.76/20,315.86 = 10,961.74/x
  3. Step 3: Cross multiply
    14,721.76x = 20,315.86 × 10,961.74
  4. Step 4: Simplify right side
    14,721.76x = 222,697,175.20
  5. Step 5: Solve for x
    x = 222,697,175.20/14,721.76
  6. Step 6: Final answer
    x = 15,127.08

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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.