Home / 28,154.31-38,808.28-22,176.51

Finding the Fourth Proportional to 28,154.31, 38,808.28 and 22,176.51

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Solution

The fourth proportional to 28,154.31, 38,808.28 and 22,176.51 is: 30,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154.31 : 38,808.28 = 22,176.51 : x
  2. Step 2: Convert to fraction form
    28,154.31/38,808.28 = 22,176.51/x
  3. Step 3: Cross multiply
    28,154.31x = 38,808.28 × 22,176.51
  4. Step 4: Simplify right side
    28,154.31x = 860,632,209.50
  5. Step 5: Solve for x
    x = 860,632,209.50/28,154.31
  6. Step 6: Final answer
    x = 30,568.40

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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.