Home / 10,420.86-15,631.29-2,630.28

Finding the Fourth Proportional to 10,420.86, 15,631.29 and 2,630.28

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Solution

The fourth proportional to 10,420.86, 15,631.29 and 2,630.28 is: 3,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.86 : 15,631.29 = 2,630.28 : x
  2. Step 2: Convert to fraction form
    10,420.86/15,631.29 = 2,630.28/x
  3. Step 3: Cross multiply
    10,420.86x = 15,631.29 × 2,630.28
  4. Step 4: Simplify right side
    10,420.86x = 41,114,669.46
  5. Step 5: Solve for x
    x = 41,114,669.46/10,420.86
  6. Step 6: Final answer
    x = 3,945.42

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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.