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Finding the Fourth Proportional to 29,859.60, 44,740.80 and 21,986.40

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Solution

The fourth proportional to 29,859.60, 44,740.80 and 21,986.40 is: 32,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,859.60 : 44,740.80 = 21,986.40 : x
  2. Step 2: Convert to fraction form
    29,859.60/44,740.80 = 21,986.40/x
  3. Step 3: Cross multiply
    29,859.60x = 44,740.80 × 21,986.40
  4. Step 4: Simplify right side
    29,859.60x = 983,689,125.12
  5. Step 5: Solve for x
    x = 983,689,125.12/29,859.60
  6. Step 6: Final answer
    x = 32,943.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.