Home / 20,573.32-28,391.70-12,619.93

Finding the Fourth Proportional to 20,573.32, 28,391.70 and 12,619.93

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Solution

The fourth proportional to 20,573.32, 28,391.70 and 12,619.93 is: 17,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.32 : 28,391.70 = 12,619.93 : x
  2. Step 2: Convert to fraction form
    20,573.32/28,391.70 = 12,619.93/x
  3. Step 3: Cross multiply
    20,573.32x = 28,391.70 × 12,619.93
  4. Step 4: Simplify right side
    20,573.32x = 358,301,266.58
  5. Step 5: Solve for x
    x = 358,301,266.58/20,573.32
  6. Step 6: Final answer
    x = 17,415.82

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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.