Home / 15,315.39-21,140.37-10,277.91

Finding the Fourth Proportional to 15,315.39, 21,140.37 and 10,277.91

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Solution

The fourth proportional to 15,315.39, 21,140.37 and 10,277.91 is: 14,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.39 : 21,140.37 = 10,277.91 : x
  2. Step 2: Convert to fraction form
    15,315.39/21,140.37 = 10,277.91/x
  3. Step 3: Cross multiply
    15,315.39x = 21,140.37 × 10,277.91
  4. Step 4: Simplify right side
    15,315.39x = 217,278,820.23
  5. Step 5: Solve for x
    x = 217,278,820.23/15,315.39
  6. Step 6: Final answer
    x = 14,186.96

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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.