Home / 21,468.51-29,560.56-18,630.88

Finding the Fourth Proportional to 21,468.51, 29,560.56 and 18,630.88

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Solution

The fourth proportional to 21,468.51, 29,560.56 and 18,630.88 is: 25,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.51 : 29,560.56 = 18,630.88 : x
  2. Step 2: Convert to fraction form
    21,468.51/29,560.56 = 18,630.88/x
  3. Step 3: Cross multiply
    21,468.51x = 29,560.56 × 18,630.88
  4. Step 4: Simplify right side
    21,468.51x = 550,739,213.18
  5. Step 5: Solve for x
    x = 550,739,213.18/21,468.51
  6. Step 6: Final answer
    x = 25,653.35

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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.