Home / 15,742.13-21,722.15-10,648.76

Finding the Fourth Proportional to 15,742.13, 21,722.15 and 10,648.76

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Solution

The fourth proportional to 15,742.13, 21,722.15 and 10,648.76 is: 14,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.13 : 21,722.15 = 10,648.76 : x
  2. Step 2: Convert to fraction form
    15,742.13/21,722.15 = 10,648.76/x
  3. Step 3: Cross multiply
    15,742.13x = 21,722.15 × 10,648.76
  4. Step 4: Simplify right side
    15,742.13x = 231,313,880.05
  5. Step 5: Solve for x
    x = 231,313,880.05/15,742.13
  6. Step 6: Final answer
    x = 14,693.94

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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.