Home / 12,579.40-17,360.54-7,543.81

Finding the Fourth Proportional to 12,579.40, 17,360.54 and 7,543.81

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Solution

The fourth proportional to 12,579.40, 17,360.54 and 7,543.81 is: 10,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.40 : 17,360.54 = 7,543.81 : x
  2. Step 2: Convert to fraction form
    12,579.40/17,360.54 = 7,543.81/x
  3. Step 3: Cross multiply
    12,579.40x = 17,360.54 × 7,543.81
  4. Step 4: Simplify right side
    12,579.40x = 130,964,615.26
  5. Step 5: Solve for x
    x = 130,964,615.26/12,579.40
  6. Step 6: Final answer
    x = 10,411.04

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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.