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Finding the Fourth Proportional to 28,647.66, 42,973.77 and 10,886.82

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Solution

The fourth proportional to 28,647.66, 42,973.77 and 10,886.82 is: 16,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.66 : 42,973.77 = 10,886.82 : x
  2. Step 2: Convert to fraction form
    28,647.66/42,973.77 = 10,886.82/x
  3. Step 3: Cross multiply
    28,647.66x = 42,973.77 × 10,886.82
  4. Step 4: Simplify right side
    28,647.66x = 467,847,698.71
  5. Step 5: Solve for x
    x = 467,847,698.71/28,647.66
  6. Step 6: Final answer
    x = 16,331.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.