Home / 13,223.48-18,248.30-7,637.56

Finding the Fourth Proportional to 13,223.48, 18,248.30 and 7,637.56

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Solution

The fourth proportional to 13,223.48, 18,248.30 and 7,637.56 is: 10,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.48 : 18,248.30 = 7,637.56 : x
  2. Step 2: Convert to fraction form
    13,223.48/18,248.30 = 7,637.56/x
  3. Step 3: Cross multiply
    13,223.48x = 18,248.30 × 7,637.56
  4. Step 4: Simplify right side
    13,223.48x = 139,372,486.15
  5. Step 5: Solve for x
    x = 139,372,486.15/13,223.48
  6. Step 6: Final answer
    x = 10,539.77

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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.