Home / 19,479.64-29,218.02-7,785.40

Finding the Fourth Proportional to 19,479.64, 29,218.02 and 7,785.40

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Solution

The fourth proportional to 19,479.64, 29,218.02 and 7,785.40 is: 11,677.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.64 : 29,218.02 = 7,785.40 : x
  2. Step 2: Convert to fraction form
    19,479.64/29,218.02 = 7,785.40/x
  3. Step 3: Cross multiply
    19,479.64x = 29,218.02 × 7,785.40
  4. Step 4: Simplify right side
    19,479.64x = 227,473,972.91
  5. Step 5: Solve for x
    x = 227,473,972.91/19,479.64
  6. Step 6: Final answer
    x = 11,677.52

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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.