Home / 11,909.17-16,434.75-6,603.87

Finding the Fourth Proportional to 11,909.17, 16,434.75 and 6,603.87

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Solution

The fourth proportional to 11,909.17, 16,434.75 and 6,603.87 is: 9,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.17 : 16,434.75 = 6,603.87 : x
  2. Step 2: Convert to fraction form
    11,909.17/16,434.75 = 6,603.87/x
  3. Step 3: Cross multiply
    11,909.17x = 16,434.75 × 6,603.87
  4. Step 4: Simplify right side
    11,909.17x = 108,532,952.48
  5. Step 5: Solve for x
    x = 108,532,952.48/11,909.17
  6. Step 6: Final answer
    x = 9,113.40

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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.