Home / 13,553.53-18,703.87-7,585.20

Finding the Fourth Proportional to 13,553.53, 18,703.87 and 7,585.20

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Solution

The fourth proportional to 13,553.53, 18,703.87 and 7,585.20 is: 10,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.53 : 18,703.87 = 7,585.20 : x
  2. Step 2: Convert to fraction form
    13,553.53/18,703.87 = 7,585.20/x
  3. Step 3: Cross multiply
    13,553.53x = 18,703.87 × 7,585.20
  4. Step 4: Simplify right side
    13,553.53x = 141,872,575.76
  5. Step 5: Solve for x
    x = 141,872,575.76/13,553.53
  6. Step 6: Final answer
    x = 10,467.58

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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.