Home / 22,129.92-30,569.13-20,555.28

Finding the Fourth Proportional to 22,129.92, 30,569.13 and 20,555.28

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Solution

The fourth proportional to 22,129.92, 30,569.13 and 20,555.28 is: 28,394.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,129.92 : 30,569.13 = 20,555.28 : x
  2. Step 2: Convert to fraction form
    22,129.92/30,569.13 = 20,555.28/x
  3. Step 3: Cross multiply
    22,129.92x = 30,569.13 × 20,555.28
  4. Step 4: Simplify right side
    22,129.92x = 628,357,026.51
  5. Step 5: Solve for x
    x = 628,357,026.51/22,129.92
  6. Step 6: Final answer
    x = 28,394.00

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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.