Home / 13,124.66-18,111.63-7,156.44

Finding the Fourth Proportional to 13,124.66, 18,111.63 and 7,156.44

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Solution

The fourth proportional to 13,124.66, 18,111.63 and 7,156.44 is: 9,875.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.66 : 18,111.63 = 7,156.44 : x
  2. Step 2: Convert to fraction form
    13,124.66/18,111.63 = 7,156.44/x
  3. Step 3: Cross multiply
    13,124.66x = 18,111.63 × 7,156.44
  4. Step 4: Simplify right side
    13,124.66x = 129,614,757.62
  5. Step 5: Solve for x
    x = 129,614,757.62/13,124.66
  6. Step 6: Final answer
    x = 9,875.67

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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.