Home / 31,582.10-43,579.60-18,835.99

Finding the Fourth Proportional to 31,582.10, 43,579.60 and 18,835.99

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Solution

The fourth proportional to 31,582.10, 43,579.60 and 18,835.99 is: 25,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,582.10 : 43,579.60 = 18,835.99 : x
  2. Step 2: Convert to fraction form
    31,582.10/43,579.60 = 18,835.99/x
  3. Step 3: Cross multiply
    31,582.10x = 43,579.60 × 18,835.99
  4. Step 4: Simplify right side
    31,582.10x = 820,864,753.77
  5. Step 5: Solve for x
    x = 820,864,753.77/31,582.10
  6. Step 6: Final answer
    x = 25,991.45

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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.