Home / 21,352.32-29,459.52-13,802.80

Finding the Fourth Proportional to 21,352.32, 29,459.52 and 13,802.80

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Solution

The fourth proportional to 21,352.32, 29,459.52 and 13,802.80 is: 19,043.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.32 : 29,459.52 = 13,802.80 : x
  2. Step 2: Convert to fraction form
    21,352.32/29,459.52 = 13,802.80/x
  3. Step 3: Cross multiply
    21,352.32x = 29,459.52 × 13,802.80
  4. Step 4: Simplify right side
    21,352.32x = 406,623,862.66
  5. Step 5: Solve for x
    x = 406,623,862.66/21,352.32
  6. Step 6: Final answer
    x = 19,043.54

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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.