Home / 31,044.15-42,840-16,896.69

Finding the Fourth Proportional to 31,044.15, 42,840 and 16,896.69

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Solution

The fourth proportional to 31,044.15, 42,840 and 16,896.69 is: 23,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,044.15 : 42,840 = 16,896.69 : x
  2. Step 2: Convert to fraction form
    31,044.15/42,840 = 16,896.69/x
  3. Step 3: Cross multiply
    31,044.15x = 42,840 × 16,896.69
  4. Step 4: Simplify right side
    31,044.15x = 723,854,199.60
  5. Step 5: Solve for x
    x = 723,854,199.60/31,044.15
  6. Step 6: Final answer
    x = 23,316.93

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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.