Home / 29,211.39-40,311.75-15,782.64

Finding the Fourth Proportional to 29,211.39, 40,311.75 and 15,782.64

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Solution

The fourth proportional to 29,211.39, 40,311.75 and 15,782.64 is: 21,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,211.39 : 40,311.75 = 15,782.64 : x
  2. Step 2: Convert to fraction form
    29,211.39/40,311.75 = 15,782.64/x
  3. Step 3: Cross multiply
    29,211.39x = 40,311.75 × 15,782.64
  4. Step 4: Simplify right side
    29,211.39x = 636,225,838.02
  5. Step 5: Solve for x
    x = 636,225,838.02/29,211.39
  6. Step 6: Final answer
    x = 21,780.06

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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.