Home / 15,780.15-23,649.77-6,409.20

Finding the Fourth Proportional to 15,780.15, 23,649.77 and 6,409.20

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Solution

The fourth proportional to 15,780.15, 23,649.77 and 6,409.20 is: 9,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.15 : 23,649.77 = 6,409.20 : x
  2. Step 2: Convert to fraction form
    15,780.15/23,649.77 = 6,409.20/x
  3. Step 3: Cross multiply
    15,780.15x = 23,649.77 × 6,409.20
  4. Step 4: Simplify right side
    15,780.15x = 151,576,011.05
  5. Step 5: Solve for x
    x = 151,576,011.05/15,780.15
  6. Step 6: Final answer
    x = 9,605.48

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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.