Home / 28,362.18-42,549.62-8,642.28

Finding the Fourth Proportional to 28,362.18, 42,549.62 and 8,642.28

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Solution

The fourth proportional to 28,362.18, 42,549.62 and 8,642.28 is: 12,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.18 : 42,549.62 = 8,642.28 : x
  2. Step 2: Convert to fraction form
    28,362.18/42,549.62 = 8,642.28/x
  3. Step 3: Cross multiply
    28,362.18x = 42,549.62 × 8,642.28
  4. Step 4: Simplify right side
    28,362.18x = 367,725,729.93
  5. Step 5: Solve for x
    x = 367,725,729.93/28,362.18
  6. Step 6: Final answer
    x = 12,965.35

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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.