Home / 14,877.64-20,531.76-8,505.28

Finding the Fourth Proportional to 14,877.64, 20,531.76 and 8,505.28

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Solution

The fourth proportional to 14,877.64, 20,531.76 and 8,505.28 is: 11,737.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,877.64 : 20,531.76 = 8,505.28 : x
  2. Step 2: Convert to fraction form
    14,877.64/20,531.76 = 8,505.28/x
  3. Step 3: Cross multiply
    14,877.64x = 20,531.76 × 8,505.28
  4. Step 4: Simplify right side
    14,877.64x = 174,628,367.69
  5. Step 5: Solve for x
    x = 174,628,367.69/14,877.64
  6. Step 6: Final answer
    x = 11,737.64

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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.