Home / 21,867.04-30,179.28-12,307.42

Finding the Fourth Proportional to 21,867.04, 30,179.28 and 12,307.42

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Solution

The fourth proportional to 21,867.04, 30,179.28 and 12,307.42 is: 16,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.04 : 30,179.28 = 12,307.42 : x
  2. Step 2: Convert to fraction form
    21,867.04/30,179.28 = 12,307.42/x
  3. Step 3: Cross multiply
    21,867.04x = 30,179.28 × 12,307.42
  4. Step 4: Simplify right side
    21,867.04x = 371,429,074.26
  5. Step 5: Solve for x
    x = 371,429,074.26/21,867.04
  6. Step 6: Final answer
    x = 16,985.80

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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.