Home / 21,202.04-31,802.76-5,191.68

Finding the Fourth Proportional to 21,202.04, 31,802.76 and 5,191.68

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Solution

The fourth proportional to 21,202.04, 31,802.76 and 5,191.68 is: 7,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.04 : 31,802.76 = 5,191.68 : x
  2. Step 2: Convert to fraction form
    21,202.04/31,802.76 = 5,191.68/x
  3. Step 3: Cross multiply
    21,202.04x = 31,802.76 × 5,191.68
  4. Step 4: Simplify right side
    21,202.04x = 165,109,753.04
  5. Step 5: Solve for x
    x = 165,109,753.04/21,202.04
  6. Step 6: Final answer
    x = 7,787.45

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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.