Home / 10,938.53-16,407.21-5,386.34

Finding the Fourth Proportional to 10,938.53, 16,407.21 and 5,386.34

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Solution

The fourth proportional to 10,938.53, 16,407.21 and 5,386.34 is: 8,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.53 : 16,407.21 = 5,386.34 : x
  2. Step 2: Convert to fraction form
    10,938.53/16,407.21 = 5,386.34/x
  3. Step 3: Cross multiply
    10,938.53x = 16,407.21 × 5,386.34
  4. Step 4: Simplify right side
    10,938.53x = 88,374,811.51
  5. Step 5: Solve for x
    x = 88,374,811.51/10,938.53
  6. Step 6: Final answer
    x = 8,079.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.