Home / 21,555.56-29,748.51-12,125.95

Finding the Fourth Proportional to 21,555.56, 29,748.51 and 12,125.95

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Solution

The fourth proportional to 21,555.56, 29,748.51 and 12,125.95 is: 16,734.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.56 : 29,748.51 = 12,125.95 : x
  2. Step 2: Convert to fraction form
    21,555.56/29,748.51 = 12,125.95/x
  3. Step 3: Cross multiply
    21,555.56x = 29,748.51 × 12,125.95
  4. Step 4: Simplify right side
    21,555.56x = 360,728,870.46
  5. Step 5: Solve for x
    x = 360,728,870.46/21,555.56
  6. Step 6: Final answer
    x = 16,734.84

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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.