Home / 21,962.07-30,307.10-12,271.61

Finding the Fourth Proportional to 21,962.07, 30,307.10 and 12,271.61

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Solution

The fourth proportional to 21,962.07, 30,307.10 and 12,271.61 is: 16,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.07 : 30,307.10 = 12,271.61 : x
  2. Step 2: Convert to fraction form
    21,962.07/30,307.10 = 12,271.61/x
  3. Step 3: Cross multiply
    21,962.07x = 30,307.10 × 12,271.61
  4. Step 4: Simplify right side
    21,962.07x = 371,916,911.43
  5. Step 5: Solve for x
    x = 371,916,911.43/21,962.07
  6. Step 6: Final answer
    x = 16,934.51

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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.