Home / 28,965.47-39,973.05-16,218.54

Finding the Fourth Proportional to 28,965.47, 39,973.05 and 16,218.54

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Solution

The fourth proportional to 28,965.47, 39,973.05 and 16,218.54 is: 22,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.47 : 39,973.05 = 16,218.54 : x
  2. Step 2: Convert to fraction form
    28,965.47/39,973.05 = 16,218.54/x
  3. Step 3: Cross multiply
    28,965.47x = 39,973.05 × 16,218.54
  4. Step 4: Simplify right side
    28,965.47x = 648,304,510.35
  5. Step 5: Solve for x
    x = 648,304,510.35/28,965.47
  6. Step 6: Final answer
    x = 22,381.98

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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.