Home / 10,405.64-14,360.76-5,690.60

Finding the Fourth Proportional to 10,405.64, 14,360.76 and 5,690.60

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Solution

The fourth proportional to 10,405.64, 14,360.76 and 5,690.60 is: 7,853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.64 : 14,360.76 = 5,690.60 : x
  2. Step 2: Convert to fraction form
    10,405.64/14,360.76 = 5,690.60/x
  3. Step 3: Cross multiply
    10,405.64x = 14,360.76 × 5,690.60
  4. Step 4: Simplify right side
    10,405.64x = 81,721,340.86
  5. Step 5: Solve for x
    x = 81,721,340.86/10,405.64
  6. Step 6: Final answer
    x = 7,853.56

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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.