Home / 11,720.24-16,173.95-6,415.40

Finding the Fourth Proportional to 11,720.24, 16,173.95 and 6,415.40

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Solution

The fourth proportional to 11,720.24, 16,173.95 and 6,415.40 is: 8,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.24 : 16,173.95 = 6,415.40 : x
  2. Step 2: Convert to fraction form
    11,720.24/16,173.95 = 6,415.40/x
  3. Step 3: Cross multiply
    11,720.24x = 16,173.95 × 6,415.40
  4. Step 4: Simplify right side
    11,720.24x = 103,762,294.00
  5. Step 5: Solve for x
    x = 103,762,294.00/11,720.24
  6. Step 6: Final answer
    x = 8,853.25

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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.