Home / 11,573.12-15,971.64-6,856.40

Finding the Fourth Proportional to 11,573.12, 15,971.64 and 6,856.40

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Solution

The fourth proportional to 11,573.12, 15,971.64 and 6,856.40 is: 9,462.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,573.12 : 15,971.64 = 6,856.40 : x
  2. Step 2: Convert to fraction form
    11,573.12/15,971.64 = 6,856.40/x
  3. Step 3: Cross multiply
    11,573.12x = 15,971.64 × 6,856.40
  4. Step 4: Simplify right side
    11,573.12x = 109,507,952.50
  5. Step 5: Solve for x
    x = 109,507,952.50/11,573.12
  6. Step 6: Final answer
    x = 9,462.27

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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.