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Finding the Fourth Proportional to 31,064.09, 42,868.94 and 16,916.94

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Solution

The fourth proportional to 31,064.09, 42,868.94 and 16,916.94 is: 23,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,064.09 : 42,868.94 = 16,916.94 : x
  2. Step 2: Convert to fraction form
    31,064.09/42,868.94 = 16,916.94/x
  3. Step 3: Cross multiply
    31,064.09x = 42,868.94 × 16,916.94
  4. Step 4: Simplify right side
    31,064.09x = 725,211,201.26
  5. Step 5: Solve for x
    x = 725,211,201.26/31,064.09
  6. Step 6: Final answer
    x = 23,345.65

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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.