Home / 19,511.28-26,925.72-11,128.08

Finding the Fourth Proportional to 19,511.28, 26,925.72 and 11,128.08

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Solution

The fourth proportional to 19,511.28, 26,925.72 and 11,128.08 is: 15,356.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.28 : 26,925.72 = 11,128.08 : x
  2. Step 2: Convert to fraction form
    19,511.28/26,925.72 = 11,128.08/x
  3. Step 3: Cross multiply
    19,511.28x = 26,925.72 × 11,128.08
  4. Step 4: Simplify right side
    19,511.28x = 299,631,566.22
  5. Step 5: Solve for x
    x = 299,631,566.22/19,511.28
  6. Step 6: Final answer
    x = 15,356.84

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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.