Home / 27,138.48-37,451.49-15,807.68

Finding the Fourth Proportional to 27,138.48, 37,451.49 and 15,807.68

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Solution

The fourth proportional to 27,138.48, 37,451.49 and 15,807.68 is: 21,814.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.48 : 37,451.49 = 15,807.68 : x
  2. Step 2: Convert to fraction form
    27,138.48/37,451.49 = 15,807.68/x
  3. Step 3: Cross multiply
    27,138.48x = 37,451.49 × 15,807.68
  4. Step 4: Simplify right side
    27,138.48x = 592,021,063.35
  5. Step 5: Solve for x
    x = 592,021,063.35/27,138.48
  6. Step 6: Final answer
    x = 21,814.82

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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.