Home / 15,790.62-21,790.48-9,501.78

Finding the Fourth Proportional to 15,790.62, 21,790.48 and 9,501.78

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Solution

The fourth proportional to 15,790.62, 21,790.48 and 9,501.78 is: 13,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.62 : 21,790.48 = 9,501.78 : x
  2. Step 2: Convert to fraction form
    15,790.62/21,790.48 = 9,501.78/x
  3. Step 3: Cross multiply
    15,790.62x = 21,790.48 × 9,501.78
  4. Step 4: Simplify right side
    15,790.62x = 207,048,347.05
  5. Step 5: Solve for x
    x = 207,048,347.05/15,790.62
  6. Step 6: Final answer
    x = 13,112.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.