Home / 21,261.56-31,892.34-17,547.80

Finding the Fourth Proportional to 21,261.56, 31,892.34 and 17,547.80

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Solution

The fourth proportional to 21,261.56, 31,892.34 and 17,547.80 is: 26,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.56 : 31,892.34 = 17,547.80 : x
  2. Step 2: Convert to fraction form
    21,261.56/31,892.34 = 17,547.80/x
  3. Step 3: Cross multiply
    21,261.56x = 31,892.34 × 17,547.80
  4. Step 4: Simplify right side
    21,261.56x = 559,640,403.85
  5. Step 5: Solve for x
    x = 559,640,403.85/21,261.56
  6. Step 6: Final answer
    x = 26,321.70

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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.