Home / 11,151.54-15,384.74-6,434.91

Finding the Fourth Proportional to 11,151.54, 15,384.74 and 6,434.91

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Solution

The fourth proportional to 11,151.54, 15,384.74 and 6,434.91 is: 8,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.54 : 15,384.74 = 6,434.91 : x
  2. Step 2: Convert to fraction form
    11,151.54/15,384.74 = 6,434.91/x
  3. Step 3: Cross multiply
    11,151.54x = 15,384.74 × 6,434.91
  4. Step 4: Simplify right side
    11,151.54x = 98,999,385.10
  5. Step 5: Solve for x
    x = 98,999,385.10/11,151.54
  6. Step 6: Final answer
    x = 8,877.64

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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.