Home / 28,150.13-38,781.42-19,637.07

Finding the Fourth Proportional to 28,150.13, 38,781.42 and 19,637.07

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Solution

The fourth proportional to 28,150.13, 38,781.42 and 19,637.07 is: 27,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.13 : 38,781.42 = 19,637.07 : x
  2. Step 2: Convert to fraction form
    28,150.13/38,781.42 = 19,637.07/x
  3. Step 3: Cross multiply
    28,150.13x = 38,781.42 × 19,637.07
  4. Step 4: Simplify right side
    28,150.13x = 761,553,459.24
  5. Step 5: Solve for x
    x = 761,553,459.24/28,150.13
  6. Step 6: Final answer
    x = 27,053.29

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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.