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Finding the Fourth Proportional to 28,461.66, 42,688.48 and 17,899.48

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Solution

The fourth proportional to 28,461.66, 42,688.48 and 17,899.48 is: 26,846.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.66 : 42,688.48 = 17,899.48 : x
  2. Step 2: Convert to fraction form
    28,461.66/42,688.48 = 17,899.48/x
  3. Step 3: Cross multiply
    28,461.66x = 42,688.48 × 17,899.48
  4. Step 4: Simplify right side
    28,461.66x = 764,101,593.99
  5. Step 5: Solve for x
    x = 764,101,593.99/28,461.66
  6. Step 6: Final answer
    x = 26,846.70

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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.