Home / 21,280.16-29,365.48-11,718.18

Finding the Fourth Proportional to 21,280.16, 29,365.48 and 11,718.18

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Solution

The fourth proportional to 21,280.16, 29,365.48 and 11,718.18 is: 16,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.16 : 29,365.48 = 11,718.18 : x
  2. Step 2: Convert to fraction form
    21,280.16/29,365.48 = 11,718.18/x
  3. Step 3: Cross multiply
    21,280.16x = 29,365.48 × 11,718.18
  4. Step 4: Simplify right side
    21,280.16x = 344,109,877.72
  5. Step 5: Solve for x
    x = 344,109,877.72/21,280.16
  6. Step 6: Final answer
    x = 16,170.46

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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.