Home / 28,605.10-42,897.12-9,880.33

Finding the Fourth Proportional to 28,605.10, 42,897.12 and 9,880.33

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Solution

The fourth proportional to 28,605.10, 42,897.12 and 9,880.33 is: 14,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.10 : 42,897.12 = 9,880.33 : x
  2. Step 2: Convert to fraction form
    28,605.10/42,897.12 = 9,880.33/x
  3. Step 3: Cross multiply
    28,605.10x = 42,897.12 × 9,880.33
  4. Step 4: Simplify right side
    28,605.10x = 423,837,557.36
  5. Step 5: Solve for x
    x = 423,837,557.36/28,605.10
  6. Step 6: Final answer
    x = 14,816.85

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1.5x scale

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.