Home / 21,559.15-29,751.58-12,127.71

Finding the Fourth Proportional to 21,559.15, 29,751.58 and 12,127.71

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Solution

The fourth proportional to 21,559.15, 29,751.58 and 12,127.71 is: 16,736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.15 : 29,751.58 = 12,127.71 : x
  2. Step 2: Convert to fraction form
    21,559.15/29,751.58 = 12,127.71/x
  3. Step 3: Cross multiply
    21,559.15x = 29,751.58 × 12,127.71
  4. Step 4: Simplify right side
    21,559.15x = 360,818,534.28
  5. Step 5: Solve for x
    x = 360,818,534.28/21,559.15
  6. Step 6: Final answer
    x = 16,736.21

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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.