Home / 31,054.19-42,837.26-19,115.09

Finding the Fourth Proportional to 31,054.19, 42,837.26 and 19,115.09

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Solution

The fourth proportional to 31,054.19, 42,837.26 and 19,115.09 is: 26,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,054.19 : 42,837.26 = 19,115.09 : x
  2. Step 2: Convert to fraction form
    31,054.19/42,837.26 = 19,115.09/x
  3. Step 3: Cross multiply
    31,054.19x = 42,837.26 × 19,115.09
  4. Step 4: Simplify right side
    31,054.19x = 818,837,931.13
  5. Step 5: Solve for x
    x = 818,837,931.13/31,054.19
  6. Step 6: Final answer
    x = 26,368.04

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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.