Home / 21,221.06-29,254.65-14,913.86

Finding the Fourth Proportional to 21,221.06, 29,254.65 and 14,913.86

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Solution

The fourth proportional to 21,221.06, 29,254.65 and 14,913.86 is: 20,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.06 : 29,254.65 = 14,913.86 : x
  2. Step 2: Convert to fraction form
    21,221.06/29,254.65 = 14,913.86/x
  3. Step 3: Cross multiply
    21,221.06x = 29,254.65 × 14,913.86
  4. Step 4: Simplify right side
    21,221.06x = 436,299,754.45
  5. Step 5: Solve for x
    x = 436,299,754.45/21,221.06
  6. Step 6: Final answer
    x = 20,559.75

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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.