Home / 10,966.32-15,128.64-6,985.26

Finding the Fourth Proportional to 10,966.32, 15,128.64 and 6,985.26

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Solution

The fourth proportional to 10,966.32, 15,128.64 and 6,985.26 is: 9,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.32 : 15,128.64 = 6,985.26 : x
  2. Step 2: Convert to fraction form
    10,966.32/15,128.64 = 6,985.26/x
  3. Step 3: Cross multiply
    10,966.32x = 15,128.64 × 6,985.26
  4. Step 4: Simplify right side
    10,966.32x = 105,677,483.85
  5. Step 5: Solve for x
    x = 105,677,483.85/10,966.32
  6. Step 6: Final answer
    x = 9,636.55

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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.