Home / 21,985.95-30,351.08-14,730.54

Finding the Fourth Proportional to 21,985.95, 30,351.08 and 14,730.54

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Solution

The fourth proportional to 21,985.95, 30,351.08 and 14,730.54 is: 20,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.95 : 30,351.08 = 14,730.54 : x
  2. Step 2: Convert to fraction form
    21,985.95/30,351.08 = 14,730.54/x
  3. Step 3: Cross multiply
    21,985.95x = 30,351.08 × 14,730.54
  4. Step 4: Simplify right side
    21,985.95x = 447,087,797.98
  5. Step 5: Solve for x
    x = 447,087,797.98/21,985.95
  6. Step 6: Final answer
    x = 20,335.16

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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.