Home / 14,965.56-20,643.18-11,978.04

Finding the Fourth Proportional to 14,965.56, 20,643.18 and 11,978.04

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Solution

The fourth proportional to 14,965.56, 20,643.18 and 11,978.04 is: 16,522.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.56 : 20,643.18 = 11,978.04 : x
  2. Step 2: Convert to fraction form
    14,965.56/20,643.18 = 11,978.04/x
  3. Step 3: Cross multiply
    14,965.56x = 20,643.18 × 11,978.04
  4. Step 4: Simplify right side
    14,965.56x = 247,264,835.77
  5. Step 5: Solve for x
    x = 247,264,835.77/14,965.56
  6. Step 6: Final answer
    x = 16,522.26

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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.