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Finding the Fourth Proportional to 28,983.99, 43,480.86 and 8,988.87

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Solution

The fourth proportional to 28,983.99, 43,480.86 and 8,988.87 is: 13,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,983.99 : 43,480.86 = 8,988.87 : x
  2. Step 2: Convert to fraction form
    28,983.99/43,480.86 = 8,988.87/x
  3. Step 3: Cross multiply
    28,983.99x = 43,480.86 × 8,988.87
  4. Step 4: Simplify right side
    28,983.99x = 390,843,798.03
  5. Step 5: Solve for x
    x = 390,843,798.03/28,983.99
  6. Step 6: Final answer
    x = 13,484.82

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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.