Home / 13,117.02-18,100.96-7,148.56

Finding the Fourth Proportional to 13,117.02, 18,100.96 and 7,148.56

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Solution

The fourth proportional to 13,117.02, 18,100.96 and 7,148.56 is: 9,864.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.02 : 18,100.96 = 7,148.56 : x
  2. Step 2: Convert to fraction form
    13,117.02/18,100.96 = 7,148.56/x
  3. Step 3: Cross multiply
    13,117.02x = 18,100.96 × 7,148.56
  4. Step 4: Simplify right side
    13,117.02x = 129,395,798.62
  5. Step 5: Solve for x
    x = 129,395,798.62/13,117.02
  6. Step 6: Final answer
    x = 9,864.73

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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.