Home / 11,345.18-15,656.61-6,309.60

Finding the Fourth Proportional to 11,345.18, 15,656.61 and 6,309.60

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Solution

The fourth proportional to 11,345.18, 15,656.61 and 6,309.60 is: 8,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.18 : 15,656.61 = 6,309.60 : x
  2. Step 2: Convert to fraction form
    11,345.18/15,656.61 = 6,309.60/x
  3. Step 3: Cross multiply
    11,345.18x = 15,656.61 × 6,309.60
  4. Step 4: Simplify right side
    11,345.18x = 98,786,946.46
  5. Step 5: Solve for x
    x = 98,786,946.46/11,345.18
  6. Step 6: Final answer
    x = 8,707.40

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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.