Home / 28,798.74-39,729.39-16,856.81

Finding the Fourth Proportional to 28,798.74, 39,729.39 and 16,856.81

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Solution

The fourth proportional to 28,798.74, 39,729.39 and 16,856.81 is: 23,254.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.74 : 39,729.39 = 16,856.81 : x
  2. Step 2: Convert to fraction form
    28,798.74/39,729.39 = 16,856.81/x
  3. Step 3: Cross multiply
    28,798.74x = 39,729.39 × 16,856.81
  4. Step 4: Simplify right side
    28,798.74x = 669,710,665.77
  5. Step 5: Solve for x
    x = 669,710,665.77/28,798.74
  6. Step 6: Final answer
    x = 23,254.86

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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.