Home / 15,436.13-21,309.21-10,340.42

Finding the Fourth Proportional to 15,436.13, 21,309.21 and 10,340.42

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Solution

The fourth proportional to 15,436.13, 21,309.21 and 10,340.42 is: 14,274.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.13 : 21,309.21 = 10,340.42 : x
  2. Step 2: Convert to fraction form
    15,436.13/21,309.21 = 10,340.42/x
  3. Step 3: Cross multiply
    15,436.13x = 21,309.21 × 10,340.42
  4. Step 4: Simplify right side
    15,436.13x = 220,346,074.72
  5. Step 5: Solve for x
    x = 220,346,074.72/15,436.13
  6. Step 6: Final answer
    x = 14,274.70

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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.