Home / 19,488.64-29,182.40-13,557.28

Finding the Fourth Proportional to 19,488.64, 29,182.40 and 13,557.28

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Solution

The fourth proportional to 19,488.64, 29,182.40 and 13,557.28 is: 20,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.64 : 29,182.40 = 13,557.28 : x
  2. Step 2: Convert to fraction form
    19,488.64/29,182.40 = 13,557.28/x
  3. Step 3: Cross multiply
    19,488.64x = 29,182.40 × 13,557.28
  4. Step 4: Simplify right side
    19,488.64x = 395,633,967.87
  5. Step 5: Solve for x
    x = 395,633,967.87/19,488.64
  6. Step 6: Final answer
    x = 20,300.75

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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.