Home / 31,389.45-43,204.77-28,398.93

Finding the Fourth Proportional to 31,389.45, 43,204.77 and 28,398.93

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Solution

The fourth proportional to 31,389.45, 43,204.77 and 28,398.93 is: 39,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.45 : 43,204.77 = 28,398.93 : x
  2. Step 2: Convert to fraction form
    31,389.45/43,204.77 = 28,398.93/x
  3. Step 3: Cross multiply
    31,389.45x = 43,204.77 × 28,398.93
  4. Step 4: Simplify right side
    31,389.45x = 1,226,969,238.90
  5. Step 5: Solve for x
    x = 1,226,969,238.90/31,389.45
  6. Step 6: Final answer
    x = 39,088.59

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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.