Home / 13,370.71-18,455.58-8,655.31

Finding the Fourth Proportional to 13,370.71, 18,455.58 and 8,655.31

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Solution

The fourth proportional to 13,370.71, 18,455.58 and 8,655.31 is: 11,946.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.71 : 18,455.58 = 8,655.31 : x
  2. Step 2: Convert to fraction form
    13,370.71/18,455.58 = 8,655.31/x
  3. Step 3: Cross multiply
    13,370.71x = 18,455.58 × 8,655.31
  4. Step 4: Simplify right side
    13,370.71x = 159,738,766.13
  5. Step 5: Solve for x
    x = 159,738,766.13/13,370.71
  6. Step 6: Final answer
    x = 11,946.92

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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.