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Finding the Fourth Proportional to 28,199.61, 42,297.86 and 9,477.71

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Solution

The fourth proportional to 28,199.61, 42,297.86 and 9,477.71 is: 14,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.61 : 42,297.86 = 9,477.71 : x
  2. Step 2: Convert to fraction form
    28,199.61/42,297.86 = 9,477.71/x
  3. Step 3: Cross multiply
    28,199.61x = 42,297.86 × 9,477.71
  4. Step 4: Simplify right side
    28,199.61x = 400,886,997.47
  5. Step 5: Solve for x
    x = 400,886,997.47/28,199.61
  6. Step 6: Final answer
    x = 14,216.05

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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.