Home / 28,424.38-42,638.59-8,700.37

Finding the Fourth Proportional to 28,424.38, 42,638.59 and 8,700.37

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Solution

The fourth proportional to 28,424.38, 42,638.59 and 8,700.37 is: 13,051.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.38 : 42,638.59 = 8,700.37 : x
  2. Step 2: Convert to fraction form
    28,424.38/42,638.59 = 8,700.37/x
  3. Step 3: Cross multiply
    28,424.38x = 42,638.59 × 8,700.37
  4. Step 4: Simplify right side
    28,424.38x = 370,971,252.58
  5. Step 5: Solve for x
    x = 370,971,252.58/28,424.38
  6. Step 6: Final answer
    x = 13,051.17

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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.