Home / 10,955.28-15,117.48-6,239.40

Finding the Fourth Proportional to 10,955.28, 15,117.48 and 6,239.40

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Solution

The fourth proportional to 10,955.28, 15,117.48 and 6,239.40 is: 8,609.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.28 : 15,117.48 = 6,239.40 : x
  2. Step 2: Convert to fraction form
    10,955.28/15,117.48 = 6,239.40/x
  3. Step 3: Cross multiply
    10,955.28x = 15,117.48 × 6,239.40
  4. Step 4: Simplify right side
    10,955.28x = 94,324,004.71
  5. Step 5: Solve for x
    x = 94,324,004.71/10,955.28
  6. Step 6: Final answer
    x = 8,609.91

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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.