Home / 28,479.84-42,699.24-13,677.36

Finding the Fourth Proportional to 28,479.84, 42,699.24 and 13,677.36

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Solution

The fourth proportional to 28,479.84, 42,699.24 and 13,677.36 is: 20,506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.84 : 42,699.24 = 13,677.36 : x
  2. Step 2: Convert to fraction form
    28,479.84/42,699.24 = 13,677.36/x
  3. Step 3: Cross multiply
    28,479.84x = 42,699.24 × 13,677.36
  4. Step 4: Simplify right side
    28,479.84x = 584,012,877.21
  5. Step 5: Solve for x
    x = 584,012,877.21/28,479.84
  6. Step 6: Final answer
    x = 20,506.19

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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.