Home / 10,867.40-16,280.14-6,488.36

Finding the Fourth Proportional to 10,867.40, 16,280.14 and 6,488.36

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Solution

The fourth proportional to 10,867.40, 16,280.14 and 6,488.36 is: 9,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.40 : 16,280.14 = 6,488.36 : x
  2. Step 2: Convert to fraction form
    10,867.40/16,280.14 = 6,488.36/x
  3. Step 3: Cross multiply
    10,867.40x = 16,280.14 × 6,488.36
  4. Step 4: Simplify right side
    10,867.40x = 105,631,409.17
  5. Step 5: Solve for x
    x = 105,631,409.17/10,867.40
  6. Step 6: Final answer
    x = 9,720.03

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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.