Home / 28,365.90-42,550.80-9,638.29

Finding the Fourth Proportional to 28,365.90, 42,550.80 and 9,638.29

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Solution

The fourth proportional to 28,365.90, 42,550.80 and 9,638.29 is: 14,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.90 : 42,550.80 = 9,638.29 : x
  2. Step 2: Convert to fraction form
    28,365.90/42,550.80 = 9,638.29/x
  3. Step 3: Cross multiply
    28,365.90x = 42,550.80 × 9,638.29
  4. Step 4: Simplify right side
    28,365.90x = 410,116,950.13
  5. Step 5: Solve for x
    x = 410,116,950.13/28,365.90
  6. Step 6: Final answer
    x = 14,458.10

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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.