Home / 13,538.24-18,683.55-7,569.75

Finding the Fourth Proportional to 13,538.24, 18,683.55 and 7,569.75

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Solution

The fourth proportional to 13,538.24, 18,683.55 and 7,569.75 is: 10,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.24 : 18,683.55 = 7,569.75 : x
  2. Step 2: Convert to fraction form
    13,538.24/18,683.55 = 7,569.75/x
  3. Step 3: Cross multiply
    13,538.24x = 18,683.55 × 7,569.75
  4. Step 4: Simplify right side
    13,538.24x = 141,429,802.61
  5. Step 5: Solve for x
    x = 141,429,802.61/13,538.24
  6. Step 6: Final answer
    x = 10,446.69

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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.