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Finding the Fourth Proportional to 29,222.60, 40,283.70 and 20,712.20

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Solution

The fourth proportional to 29,222.60, 40,283.70 and 20,712.20 is: 28,552.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,222.60 : 40,283.70 = 20,712.20 : x
  2. Step 2: Convert to fraction form
    29,222.60/40,283.70 = 20,712.20/x
  3. Step 3: Cross multiply
    29,222.60x = 40,283.70 × 20,712.20
  4. Step 4: Simplify right side
    29,222.60x = 834,364,051.14
  5. Step 5: Solve for x
    x = 834,364,051.14/29,222.60
  6. Step 6: Final answer
    x = 28,552.01

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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.