Home / 15,458.84-21,331.77-8,745.05

Finding the Fourth Proportional to 15,458.84, 21,331.77 and 8,745.05

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Solution

The fourth proportional to 15,458.84, 21,331.77 and 8,745.05 is: 12,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.84 : 21,331.77 = 8,745.05 : x
  2. Step 2: Convert to fraction form
    15,458.84/21,331.77 = 8,745.05/x
  3. Step 3: Cross multiply
    15,458.84x = 21,331.77 × 8,745.05
  4. Step 4: Simplify right side
    15,458.84x = 186,547,395.24
  5. Step 5: Solve for x
    x = 186,547,395.24/15,458.84
  6. Step 6: Final answer
    x = 12,067.36

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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.