Home / 10,405.28-14,360.56-6,875.84

Finding the Fourth Proportional to 10,405.28, 14,360.56 and 6,875.84

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Solution

The fourth proportional to 10,405.28, 14,360.56 and 6,875.84 is: 9,489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.28 : 14,360.56 = 6,875.84 : x
  2. Step 2: Convert to fraction form
    10,405.28/14,360.56 = 6,875.84/x
  3. Step 3: Cross multiply
    10,405.28x = 14,360.56 × 6,875.84
  4. Step 4: Simplify right side
    10,405.28x = 98,740,912.87
  5. Step 5: Solve for x
    x = 98,740,912.87/10,405.28
  6. Step 6: Final answer
    x = 9,489.50

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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.