Home / 13,521.36-18,657.64-7,552.28

Finding the Fourth Proportional to 13,521.36, 18,657.64 and 7,552.28

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Solution

The fourth proportional to 13,521.36, 18,657.64 and 7,552.28 is: 10,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.36 : 18,657.64 = 7,552.28 : x
  2. Step 2: Convert to fraction form
    13,521.36/18,657.64 = 7,552.28/x
  3. Step 3: Cross multiply
    13,521.36x = 18,657.64 × 7,552.28
  4. Step 4: Simplify right side
    13,521.36x = 140,907,721.42
  5. Step 5: Solve for x
    x = 140,907,721.42/13,521.36
  6. Step 6: Final answer
    x = 10,421.12

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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.