Home / 13,683.52-18,883.23-7,715.15

Finding the Fourth Proportional to 13,683.52, 18,883.23 and 7,715.15

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Solution

The fourth proportional to 13,683.52, 18,883.23 and 7,715.15 is: 10,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.52 : 18,883.23 = 7,715.15 : x
  2. Step 2: Convert to fraction form
    13,683.52/18,883.23 = 7,715.15/x
  3. Step 3: Cross multiply
    13,683.52x = 18,883.23 × 7,715.15
  4. Step 4: Simplify right side
    13,683.52x = 145,686,857.52
  5. Step 5: Solve for x
    x = 145,686,857.52/13,683.52
  6. Step 6: Final answer
    x = 10,646.89

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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.