Home / 19,488.64-29,228.64-7,798.72

Finding the Fourth Proportional to 19,488.64, 29,228.64 and 7,798.72

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Solution

The fourth proportional to 19,488.64, 29,228.64 and 7,798.72 is: 11,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.64 : 29,228.64 = 7,798.72 : x
  2. Step 2: Convert to fraction form
    19,488.64/29,228.64 = 7,798.72/x
  3. Step 3: Cross multiply
    19,488.64x = 29,228.64 × 7,798.72
  4. Step 4: Simplify right side
    19,488.64x = 227,945,979.34
  5. Step 5: Solve for x
    x = 227,945,979.34/19,488.64
  6. Step 6: Final answer
    x = 11,696.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.