Home / 28,090.94-38,781.05-19,151.57

Finding the Fourth Proportional to 28,090.94, 38,781.05 and 19,151.57

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Solution

The fourth proportional to 28,090.94, 38,781.05 and 19,151.57 is: 26,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.94 : 38,781.05 = 19,151.57 : x
  2. Step 2: Convert to fraction form
    28,090.94/38,781.05 = 19,151.57/x
  3. Step 3: Cross multiply
    28,090.94x = 38,781.05 × 19,151.57
  4. Step 4: Simplify right side
    28,090.94x = 742,717,994.94
  5. Step 5: Solve for x
    x = 742,717,994.94/28,090.94
  6. Step 6: Final answer
    x = 26,439.77

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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.