Home / 15,447.08-21,315.81-10,418.12

Finding the Fourth Proportional to 15,447.08, 21,315.81 and 10,418.12

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Solution

The fourth proportional to 15,447.08, 21,315.81 and 10,418.12 is: 14,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.08 : 21,315.81 = 10,418.12 : x
  2. Step 2: Convert to fraction form
    15,447.08/21,315.81 = 10,418.12/x
  3. Step 3: Cross multiply
    15,447.08x = 21,315.81 × 10,418.12
  4. Step 4: Simplify right side
    15,447.08x = 222,070,620.30
  5. Step 5: Solve for x
    x = 222,070,620.30/15,447.08
  6. Step 6: Final answer
    x = 14,376.22

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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.