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Finding the Fourth Proportional to 29,509.19, 40,722.50 and 16,080.40

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Solution

The fourth proportional to 29,509.19, 40,722.50 and 16,080.40 is: 22,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,509.19 : 40,722.50 = 16,080.40 : x
  2. Step 2: Convert to fraction form
    29,509.19/40,722.50 = 16,080.40/x
  3. Step 3: Cross multiply
    29,509.19x = 40,722.50 × 16,080.40
  4. Step 4: Simplify right side
    29,509.19x = 654,834,089
  5. Step 5: Solve for x
    x = 654,834,089/29,509.19
  6. Step 6: Final answer
    x = 22,190.85

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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.