Home / 28,557.65-42,822.09-11,913.36

Finding the Fourth Proportional to 28,557.65, 42,822.09 and 11,913.36

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Solution

The fourth proportional to 28,557.65, 42,822.09 and 11,913.36 is: 17,864.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.65 : 42,822.09 = 11,913.36 : x
  2. Step 2: Convert to fraction form
    28,557.65/42,822.09 = 11,913.36/x
  3. Step 3: Cross multiply
    28,557.65x = 42,822.09 × 11,913.36
  4. Step 4: Simplify right side
    28,557.65x = 510,154,974.12
  5. Step 5: Solve for x
    x = 510,154,974.12/28,557.65
  6. Step 6: Final answer
    x = 17,864.04

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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.