Home / 21,657.02-29,900.46-17,687.60

Finding the Fourth Proportional to 21,657.02, 29,900.46 and 17,687.60

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Solution

The fourth proportional to 21,657.02, 29,900.46 and 17,687.60 is: 24,420.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.02 : 29,900.46 = 17,687.60 : x
  2. Step 2: Convert to fraction form
    21,657.02/29,900.46 = 17,687.60/x
  3. Step 3: Cross multiply
    21,657.02x = 29,900.46 × 17,687.60
  4. Step 4: Simplify right side
    21,657.02x = 528,867,376.30
  5. Step 5: Solve for x
    x = 528,867,376.30/21,657.02
  6. Step 6: Final answer
    x = 24,420.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.