Home / 21,068.40-31,564.20-17,151.60

Finding the Fourth Proportional to 21,068.40, 31,564.20 and 17,151.60

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Solution

The fourth proportional to 21,068.40, 31,564.20 and 17,151.60 is: 25,696.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.40 : 31,564.20 = 17,151.60 : x
  2. Step 2: Convert to fraction form
    21,068.40/31,564.20 = 17,151.60/x
  3. Step 3: Cross multiply
    21,068.40x = 31,564.20 × 17,151.60
  4. Step 4: Simplify right side
    21,068.40x = 541,376,532.72
  5. Step 5: Solve for x
    x = 541,376,532.72/21,068.40
  6. Step 6: Final answer
    x = 25,696.14

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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.