Home / 11,156.51-15,395.85-6,440.69

Finding the Fourth Proportional to 11,156.51, 15,395.85 and 6,440.69

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Solution

The fourth proportional to 11,156.51, 15,395.85 and 6,440.69 is: 8,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.51 : 15,395.85 = 6,440.69 : x
  2. Step 2: Convert to fraction form
    11,156.51/15,395.85 = 6,440.69/x
  3. Step 3: Cross multiply
    11,156.51x = 15,395.85 × 6,440.69
  4. Step 4: Simplify right side
    11,156.51x = 99,159,820.16
  5. Step 5: Solve for x
    x = 99,159,820.16/11,156.51
  6. Step 6: Final answer
    x = 8,888.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.