Home / 21,486.31-29,651.32-12,055.08

Finding the Fourth Proportional to 21,486.31, 29,651.32 and 12,055.08

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Solution

The fourth proportional to 21,486.31, 29,651.32 and 12,055.08 is: 16,636.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.31 : 29,651.32 = 12,055.08 : x
  2. Step 2: Convert to fraction form
    21,486.31/29,651.32 = 12,055.08/x
  3. Step 3: Cross multiply
    21,486.31x = 29,651.32 × 12,055.08
  4. Step 4: Simplify right side
    21,486.31x = 357,449,034.71
  5. Step 5: Solve for x
    x = 357,449,034.71/21,486.31
  6. Step 6: Final answer
    x = 16,636.13

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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.