Home / 20,886.45-28,806.51-18,363.16

Finding the Fourth Proportional to 20,886.45, 28,806.51 and 18,363.16

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Solution

The fourth proportional to 20,886.45, 28,806.51 and 18,363.16 is: 25,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.45 : 28,806.51 = 18,363.16 : x
  2. Step 2: Convert to fraction form
    20,886.45/28,806.51 = 18,363.16/x
  3. Step 3: Cross multiply
    20,886.45x = 28,806.51 × 18,363.16
  4. Step 4: Simplify right side
    20,886.45x = 528,978,552.17
  5. Step 5: Solve for x
    x = 528,978,552.17/20,886.45
  6. Step 6: Final answer
    x = 25,326.40

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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.