Home / 21,014.40-31,483.20-17,097.60

Finding the Fourth Proportional to 21,014.40, 31,483.20 and 17,097.60

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Solution

The fourth proportional to 21,014.40, 31,483.20 and 17,097.60 is: 25,615.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.40 : 31,483.20 = 17,097.60 : x
  2. Step 2: Convert to fraction form
    21,014.40/31,483.20 = 17,097.60/x
  3. Step 3: Cross multiply
    21,014.40x = 31,483.20 × 17,097.60
  4. Step 4: Simplify right side
    21,014.40x = 538,287,160.32
  5. Step 5: Solve for x
    x = 538,287,160.32/21,014.40
  6. Step 6: Final answer
    x = 25,615.16

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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.