Home / 28,389.29-42,590.21-8,669.30

Finding the Fourth Proportional to 28,389.29, 42,590.21 and 8,669.30

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Solution

The fourth proportional to 28,389.29, 42,590.21 and 8,669.30 is: 13,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.29 : 42,590.21 = 8,669.30 : x
  2. Step 2: Convert to fraction form
    28,389.29/42,590.21 = 8,669.30/x
  3. Step 3: Cross multiply
    28,389.29x = 42,590.21 × 8,669.30
  4. Step 4: Simplify right side
    28,389.29x = 369,227,051.26
  5. Step 5: Solve for x
    x = 369,227,051.26/28,389.29
  6. Step 6: Final answer
    x = 13,005.86

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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.