Home / 15,539.20-21,394.56-14,479.36

Finding the Fourth Proportional to 15,539.20, 21,394.56 and 14,479.36

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Solution

The fourth proportional to 15,539.20, 21,394.56 and 14,479.36 is: 19,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539.20 : 21,394.56 = 14,479.36 : x
  2. Step 2: Convert to fraction form
    15,539.20/21,394.56 = 14,479.36/x
  3. Step 3: Cross multiply
    15,539.20x = 21,394.56 × 14,479.36
  4. Step 4: Simplify right side
    15,539.20x = 309,779,536.28
  5. Step 5: Solve for x
    x = 309,779,536.28/15,539.20
  6. Step 6: Final answer
    x = 19,935.36

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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.