Home / 31,364.50-43,291.30-19,421.05

Finding the Fourth Proportional to 31,364.50, 43,291.30 and 19,421.05

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Solution

The fourth proportional to 31,364.50, 43,291.30 and 19,421.05 is: 26,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,364.50 : 43,291.30 = 19,421.05 : x
  2. Step 2: Convert to fraction form
    31,364.50/43,291.30 = 19,421.05/x
  3. Step 3: Cross multiply
    31,364.50x = 43,291.30 × 19,421.05
  4. Step 4: Simplify right side
    31,364.50x = 840,762,501.87
  5. Step 5: Solve for x
    x = 840,762,501.87/31,364.50
  6. Step 6: Final answer
    x = 26,806.18

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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.