Home / 11,151.07-15,389.81-6,435.25

Finding the Fourth Proportional to 11,151.07, 15,389.81 and 6,435.25

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Solution

The fourth proportional to 11,151.07, 15,389.81 and 6,435.25 is: 8,881.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.07 : 15,389.81 = 6,435.25 : x
  2. Step 2: Convert to fraction form
    11,151.07/15,389.81 = 6,435.25/x
  3. Step 3: Cross multiply
    11,151.07x = 15,389.81 × 6,435.25
  4. Step 4: Simplify right side
    11,151.07x = 99,037,274.80
  5. Step 5: Solve for x
    x = 99,037,274.80/11,151.07
  6. Step 6: Final answer
    x = 8,881.41

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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.