Home / 39,789.10-59,682.79-18,717.47

Finding the Fourth Proportional to 39,789.10, 59,682.79 and 18,717.47

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Solution

The fourth proportional to 39,789.10, 59,682.79 and 18,717.47 is: 28,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.10 : 59,682.79 = 18,717.47 : x
  2. Step 2: Convert to fraction form
    39,789.10/59,682.79 = 18,717.47/x
  3. Step 3: Cross multiply
    39,789.10x = 59,682.79 × 18,717.47
  4. Step 4: Simplify right side
    39,789.10x = 1,117,110,831.34
  5. Step 5: Solve for x
    x = 1,117,110,831.34/39,789.10
  6. Step 6: Final answer
    x = 28,075.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.