Home / 10,911.16-15,055.63-6,434.29

Finding the Fourth Proportional to 10,911.16, 15,055.63 and 6,434.29

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Solution

The fourth proportional to 10,911.16, 15,055.63 and 6,434.29 is: 8,878.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.16 : 15,055.63 = 6,434.29 : x
  2. Step 2: Convert to fraction form
    10,911.16/15,055.63 = 6,434.29/x
  3. Step 3: Cross multiply
    10,911.16x = 15,055.63 × 6,434.29
  4. Step 4: Simplify right side
    10,911.16x = 96,872,289.55
  5. Step 5: Solve for x
    x = 96,872,289.55/10,911.16
  6. Step 6: Final answer
    x = 8,878.28

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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.