Home / 31,290.60-43,188.66-19,346.76

Finding the Fourth Proportional to 31,290.60, 43,188.66 and 19,346.76

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Solution

The fourth proportional to 31,290.60, 43,188.66 and 19,346.76 is: 26,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.60 : 43,188.66 = 19,346.76 : x
  2. Step 2: Convert to fraction form
    31,290.60/43,188.66 = 19,346.76/x
  3. Step 3: Cross multiply
    31,290.60x = 43,188.66 × 19,346.76
  4. Step 4: Simplify right side
    31,290.60x = 835,560,639.74
  5. Step 5: Solve for x
    x = 835,560,639.74/31,290.60
  6. Step 6: Final answer
    x = 26,703.25

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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.