Home / 21,959.04-30,271.68-13,560.96

Finding the Fourth Proportional to 21,959.04, 30,271.68 and 13,560.96

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Solution

The fourth proportional to 21,959.04, 30,271.68 and 13,560.96 is: 18,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.04 : 30,271.68 = 13,560.96 : x
  2. Step 2: Convert to fraction form
    21,959.04/30,271.68 = 13,560.96/x
  3. Step 3: Cross multiply
    21,959.04x = 30,271.68 × 13,560.96
  4. Step 4: Simplify right side
    21,959.04x = 410,513,041.61
  5. Step 5: Solve for x
    x = 410,513,041.61/21,959.04
  6. Step 6: Final answer
    x = 18,694.49

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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.