Home / 20,916.50-28,854.63-13,848.84

Finding the Fourth Proportional to 20,916.50, 28,854.63 and 13,848.84

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Solution

The fourth proportional to 20,916.50, 28,854.63 and 13,848.84 is: 19,104.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.50 : 28,854.63 = 13,848.84 : x
  2. Step 2: Convert to fraction form
    20,916.50/28,854.63 = 13,848.84/x
  3. Step 3: Cross multiply
    20,916.50x = 28,854.63 × 13,848.84
  4. Step 4: Simplify right side
    20,916.50x = 399,603,154.13
  5. Step 5: Solve for x
    x = 399,603,154.13/20,916.50
  6. Step 6: Final answer
    x = 19,104.69

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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.