Home / 13,215.09-18,237.08-7,246.41

Finding the Fourth Proportional to 13,215.09, 18,237.08 and 7,246.41

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Solution

The fourth proportional to 13,215.09, 18,237.08 and 7,246.41 is: 10,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.09 : 18,237.08 = 7,246.41 : x
  2. Step 2: Convert to fraction form
    13,215.09/18,237.08 = 7,246.41/x
  3. Step 3: Cross multiply
    13,215.09x = 18,237.08 × 7,246.41
  4. Step 4: Simplify right side
    13,215.09x = 132,153,358.88
  5. Step 5: Solve for x
    x = 132,153,358.88/13,215.09
  6. Step 6: Final answer
    x = 10,000.19

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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.