Home / 21,778.12-30,054.66-12,348.52

Finding the Fourth Proportional to 21,778.12, 30,054.66 and 12,348.52

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Solution

The fourth proportional to 21,778.12, 30,054.66 and 12,348.52 is: 17,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.12 : 30,054.66 = 12,348.52 : x
  2. Step 2: Convert to fraction form
    21,778.12/30,054.66 = 12,348.52/x
  3. Step 3: Cross multiply
    21,778.12x = 30,054.66 × 12,348.52
  4. Step 4: Simplify right side
    21,778.12x = 371,130,570.10
  5. Step 5: Solve for x
    x = 371,130,570.10/21,778.12
  6. Step 6: Final answer
    x = 17,041.44

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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.