Home / 11,387.05-15,710.65-6,605.34

Finding the Fourth Proportional to 11,387.05, 15,710.65 and 6,605.34

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Solution

The fourth proportional to 11,387.05, 15,710.65 and 6,605.34 is: 9,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.05 : 15,710.65 = 6,605.34 : x
  2. Step 2: Convert to fraction form
    11,387.05/15,710.65 = 6,605.34/x
  3. Step 3: Cross multiply
    11,387.05x = 15,710.65 × 6,605.34
  4. Step 4: Simplify right side
    11,387.05x = 103,774,138.22
  5. Step 5: Solve for x
    x = 103,774,138.22/11,387.05
  6. Step 6: Final answer
    x = 9,113.35

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1.5x scale

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.