Home / 31,041.65-42,840.47-19,111.97

Finding the Fourth Proportional to 31,041.65, 42,840.47 and 19,111.97

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Solution

The fourth proportional to 31,041.65, 42,840.47 and 19,111.97 is: 26,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,041.65 : 42,840.47 = 19,111.97 : x
  2. Step 2: Convert to fraction form
    31,041.65/42,840.47 = 19,111.97/x
  3. Step 3: Cross multiply
    31,041.65x = 42,840.47 × 19,111.97
  4. Step 4: Simplify right side
    31,041.65x = 818,765,932.31
  5. Step 5: Solve for x
    x = 818,765,932.31/31,041.65
  6. Step 6: Final answer
    x = 26,376.36

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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.