Home / 20,812.60-31,101.23-14,980.60

Finding the Fourth Proportional to 20,812.60, 31,101.23 and 14,980.60

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Solution

The fourth proportional to 20,812.60, 31,101.23 and 14,980.60 is: 22,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.60 : 31,101.23 = 14,980.60 : x
  2. Step 2: Convert to fraction form
    20,812.60/31,101.23 = 14,980.60/x
  3. Step 3: Cross multiply
    20,812.60x = 31,101.23 × 14,980.60
  4. Step 4: Simplify right side
    20,812.60x = 465,915,086.14
  5. Step 5: Solve for x
    x = 465,915,086.14/20,812.60
  6. Step 6: Final answer
    x = 22,386.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.