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Finding the Fourth Proportional to 34,218.40, 51,356.40 and 16,703.20

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Solution

The fourth proportional to 34,218.40, 51,356.40 and 16,703.20 is: 25,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,218.40 : 51,356.40 = 16,703.20 : x
  2. Step 2: Convert to fraction form
    34,218.40/51,356.40 = 16,703.20/x
  3. Step 3: Cross multiply
    34,218.40x = 51,356.40 × 16,703.20
  4. Step 4: Simplify right side
    34,218.40x = 857,816,220.48
  5. Step 5: Solve for x
    x = 857,816,220.48/34,218.40
  6. Step 6: Final answer
    x = 25,068.86

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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.