Home / 13,140-18,133.28-7,551.04

Finding the Fourth Proportional to 13,140, 18,133.28 and 7,551.04

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Solution

The fourth proportional to 13,140, 18,133.28 and 7,551.04 is: 10,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140 : 18,133.28 = 7,551.04 : x
  2. Step 2: Convert to fraction form
    13,140/18,133.28 = 7,551.04/x
  3. Step 3: Cross multiply
    13,140x = 18,133.28 × 7,551.04
  4. Step 4: Simplify right side
    13,140x = 136,925,122.61
  5. Step 5: Solve for x
    x = 136,925,122.61/13,140
  6. Step 6: Final answer
    x = 10,420.48

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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.