Home / 10,649.30-15,968.40-3,980.32

Finding the Fourth Proportional to 10,649.30, 15,968.40 and 3,980.32

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Solution

The fourth proportional to 10,649.30, 15,968.40 and 3,980.32 is: 5,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,649.30 : 15,968.40 = 3,980.32 : x
  2. Step 2: Convert to fraction form
    10,649.30/15,968.40 = 3,980.32/x
  3. Step 3: Cross multiply
    10,649.30x = 15,968.40 × 3,980.32
  4. Step 4: Simplify right side
    10,649.30x = 63,559,262.05
  5. Step 5: Solve for x
    x = 63,559,262.05/10,649.30
  6. Step 6: Final answer
    x = 5,968.40

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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.