Home / 11,455.02-15,803.10-6,978.15

Finding the Fourth Proportional to 11,455.02, 15,803.10 and 6,978.15

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Solution

The fourth proportional to 11,455.02, 15,803.10 and 6,978.15 is: 9,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.02 : 15,803.10 = 6,978.15 : x
  2. Step 2: Convert to fraction form
    11,455.02/15,803.10 = 6,978.15/x
  3. Step 3: Cross multiply
    11,455.02x = 15,803.10 × 6,978.15
  4. Step 4: Simplify right side
    11,455.02x = 110,276,402.27
  5. Step 5: Solve for x
    x = 110,276,402.27/11,455.02
  6. Step 6: Final answer
    x = 9,626.91

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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.