Home / 11,307.07-15,607.80-7,719.46

Finding the Fourth Proportional to 11,307.07, 15,607.80 and 7,719.46

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Solution

The fourth proportional to 11,307.07, 15,607.80 and 7,719.46 is: 10,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.07 : 15,607.80 = 7,719.46 : x
  2. Step 2: Convert to fraction form
    11,307.07/15,607.80 = 7,719.46/x
  3. Step 3: Cross multiply
    11,307.07x = 15,607.80 × 7,719.46
  4. Step 4: Simplify right side
    11,307.07x = 120,483,787.79
  5. Step 5: Solve for x
    x = 120,483,787.79/11,307.07
  6. Step 6: Final answer
    x = 10,655.62

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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.