Home / 20,363.19-28,100.68-11,411.07

Finding the Fourth Proportional to 20,363.19, 28,100.68 and 11,411.07

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Solution

The fourth proportional to 20,363.19, 28,100.68 and 11,411.07 is: 15,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.19 : 28,100.68 = 11,411.07 : x
  2. Step 2: Convert to fraction form
    20,363.19/28,100.68 = 11,411.07/x
  3. Step 3: Cross multiply
    20,363.19x = 28,100.68 × 11,411.07
  4. Step 4: Simplify right side
    20,363.19x = 320,658,826.53
  5. Step 5: Solve for x
    x = 320,658,826.53/20,363.19
  6. Step 6: Final answer
    x = 15,746.98

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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.