Home / 21,159.74-29,199.42-12,210.14

Finding the Fourth Proportional to 21,159.74, 29,199.42 and 12,210.14

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Solution

The fourth proportional to 21,159.74, 29,199.42 and 12,210.14 is: 16,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.74 : 29,199.42 = 12,210.14 : x
  2. Step 2: Convert to fraction form
    21,159.74/29,199.42 = 12,210.14/x
  3. Step 3: Cross multiply
    21,159.74x = 29,199.42 × 12,210.14
  4. Step 4: Simplify right side
    21,159.74x = 356,529,006.12
  5. Step 5: Solve for x
    x = 356,529,006.12/21,159.74
  6. Step 6: Final answer
    x = 16,849.40

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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.