Home / 31,421.12-43,377.93-19,494.68

Finding the Fourth Proportional to 31,421.12, 43,377.93 and 19,494.68

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Solution

The fourth proportional to 31,421.12, 43,377.93 and 19,494.68 is: 26,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.12 : 43,377.93 = 19,494.68 : x
  2. Step 2: Convert to fraction form
    31,421.12/43,377.93 = 19,494.68/x
  3. Step 3: Cross multiply
    31,421.12x = 43,377.93 × 19,494.68
  4. Step 4: Simplify right side
    31,421.12x = 845,638,647.52
  5. Step 5: Solve for x
    x = 845,638,647.52/31,421.12
  6. Step 6: Final answer
    x = 26,913.07

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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.