Home / 29,126.80-40,208.51-21,959.61

Finding the Fourth Proportional to 29,126.80, 40,208.51 and 21,959.61

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Solution

The fourth proportional to 29,126.80, 40,208.51 and 21,959.61 is: 30,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,126.80 : 40,208.51 = 21,959.61 : x
  2. Step 2: Convert to fraction form
    29,126.80/40,208.51 = 21,959.61/x
  3. Step 3: Cross multiply
    29,126.80x = 40,208.51 × 21,959.61
  4. Step 4: Simplify right side
    29,126.80x = 882,963,328.57
  5. Step 5: Solve for x
    x = 882,963,328.57/29,126.80
  6. Step 6: Final answer
    x = 30,314.47

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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.