Home / 28,389.50-42,590.40-8,667.50

Finding the Fourth Proportional to 28,389.50, 42,590.40 and 8,667.50

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Solution

The fourth proportional to 28,389.50, 42,590.40 and 8,667.50 is: 13,003.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.50 : 42,590.40 = 8,667.50 : x
  2. Step 2: Convert to fraction form
    28,389.50/42,590.40 = 8,667.50/x
  3. Step 3: Cross multiply
    28,389.50x = 42,590.40 × 8,667.50
  4. Step 4: Simplify right side
    28,389.50x = 369,152,292
  5. Step 5: Solve for x
    x = 369,152,292/28,389.50
  6. Step 6: Final answer
    x = 13,003.13

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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.