Home / 20,360.73-28,088.29-13,558.18

Finding the Fourth Proportional to 20,360.73, 28,088.29 and 13,558.18

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Solution

The fourth proportional to 20,360.73, 28,088.29 and 13,558.18 is: 18,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.73 : 28,088.29 = 13,558.18 : x
  2. Step 2: Convert to fraction form
    20,360.73/28,088.29 = 13,558.18/x
  3. Step 3: Cross multiply
    20,360.73x = 28,088.29 × 13,558.18
  4. Step 4: Simplify right side
    20,360.73x = 380,825,985.17
  5. Step 5: Solve for x
    x = 380,825,985.17/20,360.73
  6. Step 6: Final answer
    x = 18,703.94

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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.