Home / 20,886.48-31,328.44-8,574.16

Finding the Fourth Proportional to 20,886.48, 31,328.44 and 8,574.16

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Solution

The fourth proportional to 20,886.48, 31,328.44 and 8,574.16 is: 12,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.48 : 31,328.44 = 8,574.16 : x
  2. Step 2: Convert to fraction form
    20,886.48/31,328.44 = 8,574.16/x
  3. Step 3: Cross multiply
    20,886.48x = 31,328.44 × 8,574.16
  4. Step 4: Simplify right side
    20,886.48x = 268,615,057.11
  5. Step 5: Solve for x
    x = 268,615,057.11/20,886.48
  6. Step 6: Final answer
    x = 12,860.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.