Home / 21,561.96-29,750.58-12,127.08

Finding the Fourth Proportional to 21,561.96, 29,750.58 and 12,127.08

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Solution

The fourth proportional to 21,561.96, 29,750.58 and 12,127.08 is: 16,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.96 : 29,750.58 = 12,127.08 : x
  2. Step 2: Convert to fraction form
    21,561.96/29,750.58 = 12,127.08/x
  3. Step 3: Cross multiply
    21,561.96x = 29,750.58 × 12,127.08
  4. Step 4: Simplify right side
    21,561.96x = 360,787,663.71
  5. Step 5: Solve for x
    x = 360,787,663.71/21,561.96
  6. Step 6: Final answer
    x = 16,732.60

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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.