Home / 31,298.75-43,192.32-18,723.50

Finding the Fourth Proportional to 31,298.75, 43,192.32 and 18,723.50

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Solution

The fourth proportional to 31,298.75, 43,192.32 and 18,723.50 is: 25,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,298.75 : 43,192.32 = 18,723.50 : x
  2. Step 2: Convert to fraction form
    31,298.75/43,192.32 = 18,723.50/x
  3. Step 3: Cross multiply
    31,298.75x = 43,192.32 × 18,723.50
  4. Step 4: Simplify right side
    31,298.75x = 808,711,403.52
  5. Step 5: Solve for x
    x = 808,711,403.52/31,298.75
  6. Step 6: Final answer
    x = 25,838.46

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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.