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Finding the Fourth Proportional to 28,574.51, 42,860.16 and 8,852.48

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Solution

The fourth proportional to 28,574.51, 42,860.16 and 8,852.48 is: 13,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.51 : 42,860.16 = 8,852.48 : x
  2. Step 2: Convert to fraction form
    28,574.51/42,860.16 = 8,852.48/x
  3. Step 3: Cross multiply
    28,574.51x = 42,860.16 × 8,852.48
  4. Step 4: Simplify right side
    28,574.51x = 379,418,494.90
  5. Step 5: Solve for x
    x = 379,418,494.90/28,574.51
  6. Step 6: Final answer
    x = 13,278.22

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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.