Home / 31,011.09-42,798.48-18,268.29

Finding the Fourth Proportional to 31,011.09, 42,798.48 and 18,268.29

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Solution

The fourth proportional to 31,011.09, 42,798.48 and 18,268.29 is: 25,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011.09 : 42,798.48 = 18,268.29 : x
  2. Step 2: Convert to fraction form
    31,011.09/42,798.48 = 18,268.29/x
  3. Step 3: Cross multiply
    31,011.09x = 42,798.48 × 18,268.29
  4. Step 4: Simplify right side
    31,011.09x = 781,855,044.20
  5. Step 5: Solve for x
    x = 781,855,044.20/31,011.09
  6. Step 6: Final answer
    x = 25,212.11

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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.