Home / 21,267.16-29,348.70-12,315.14

Finding the Fourth Proportional to 21,267.16, 29,348.70 and 12,315.14

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Solution

The fourth proportional to 21,267.16, 29,348.70 and 12,315.14 is: 16,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.16 : 29,348.70 = 12,315.14 : x
  2. Step 2: Convert to fraction form
    21,267.16/29,348.70 = 12,315.14/x
  3. Step 3: Cross multiply
    21,267.16x = 29,348.70 × 12,315.14
  4. Step 4: Simplify right side
    21,267.16x = 361,433,287.74
  5. Step 5: Solve for x
    x = 361,433,287.74/21,267.16
  6. Step 6: Final answer
    x = 16,994.91

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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.