Home / 21,559.64-29,750.69-12,126.38

Finding the Fourth Proportional to 21,559.64, 29,750.69 and 12,126.38

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Solution

The fourth proportional to 21,559.64, 29,750.69 and 12,126.38 is: 16,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.64 : 29,750.69 = 12,126.38 : x
  2. Step 2: Convert to fraction form
    21,559.64/29,750.69 = 12,126.38/x
  3. Step 3: Cross multiply
    21,559.64x = 29,750.69 × 12,126.38
  4. Step 4: Simplify right side
    21,559.64x = 360,768,053.76
  5. Step 5: Solve for x
    x = 360,768,053.76/21,559.64
  6. Step 6: Final answer
    x = 16,733.50

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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.