Home / 11,117.34-15,339.60-6,400.71

Finding the Fourth Proportional to 11,117.34, 15,339.60 and 6,400.71

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Solution

The fourth proportional to 11,117.34, 15,339.60 and 6,400.71 is: 8,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.34 : 15,339.60 = 6,400.71 : x
  2. Step 2: Convert to fraction form
    11,117.34/15,339.60 = 6,400.71/x
  3. Step 3: Cross multiply
    11,117.34x = 15,339.60 × 6,400.71
  4. Step 4: Simplify right side
    11,117.34x = 98,184,331.12
  5. Step 5: Solve for x
    x = 98,184,331.12/11,117.34
  6. Step 6: Final answer
    x = 8,831.64

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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.