Home / 31,445.69-43,397.93-18,021.29

Finding the Fourth Proportional to 31,445.69, 43,397.93 and 18,021.29

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Solution

The fourth proportional to 31,445.69, 43,397.93 and 18,021.29 is: 24,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.69 : 43,397.93 = 18,021.29 : x
  2. Step 2: Convert to fraction form
    31,445.69/43,397.93 = 18,021.29/x
  3. Step 3: Cross multiply
    31,445.69x = 43,397.93 × 18,021.29
  4. Step 4: Simplify right side
    31,445.69x = 782,086,681.93
  5. Step 5: Solve for x
    x = 782,086,681.93/31,445.69
  6. Step 6: Final answer
    x = 24,871.03

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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.