Home / 30,781.94-42,476.01-18,848.66

Finding the Fourth Proportional to 30,781.94, 42,476.01 and 18,848.66

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Solution

The fourth proportional to 30,781.94, 42,476.01 and 18,848.66 is: 26,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,781.94 : 42,476.01 = 18,848.66 : x
  2. Step 2: Convert to fraction form
    30,781.94/42,476.01 = 18,848.66/x
  3. Step 3: Cross multiply
    30,781.94x = 42,476.01 × 18,848.66
  4. Step 4: Simplify right side
    30,781.94x = 800,615,870.65
  5. Step 5: Solve for x
    x = 800,615,870.65/30,781.94
  6. Step 6: Final answer
    x = 26,009.27

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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.