Home / 21,235.02-29,280.25-13,568.16

Finding the Fourth Proportional to 21,235.02, 29,280.25 and 13,568.16

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Solution

The fourth proportional to 21,235.02, 29,280.25 and 13,568.16 is: 18,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.02 : 29,280.25 = 13,568.16 : x
  2. Step 2: Convert to fraction form
    21,235.02/29,280.25 = 13,568.16/x
  3. Step 3: Cross multiply
    21,235.02x = 29,280.25 × 13,568.16
  4. Step 4: Simplify right side
    21,235.02x = 397,279,243.60
  5. Step 5: Solve for x
    x = 397,279,243.60/21,235.02
  6. Step 6: Final answer
    x = 18,708.68

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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.