Home / 21,913.84-30,238.68-12,482.20

Finding the Fourth Proportional to 21,913.84, 30,238.68 and 12,482.20

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Solution

The fourth proportional to 21,913.84, 30,238.68 and 12,482.20 is: 17,224.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.84 : 30,238.68 = 12,482.20 : x
  2. Step 2: Convert to fraction form
    21,913.84/30,238.68 = 12,482.20/x
  3. Step 3: Cross multiply
    21,913.84x = 30,238.68 × 12,482.20
  4. Step 4: Simplify right side
    21,913.84x = 377,445,251.50
  5. Step 5: Solve for x
    x = 377,445,251.50/21,913.84
  6. Step 6: Final answer
    x = 17,224.06

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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.