Home / 19,215.44-28,830.84-10,440.08

Finding the Fourth Proportional to 19,215.44, 28,830.84 and 10,440.08

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Solution

The fourth proportional to 19,215.44, 28,830.84 and 10,440.08 is: 15,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.44 : 28,830.84 = 10,440.08 : x
  2. Step 2: Convert to fraction form
    19,215.44/28,830.84 = 10,440.08/x
  3. Step 3: Cross multiply
    19,215.44x = 28,830.84 × 10,440.08
  4. Step 4: Simplify right side
    19,215.44x = 300,996,276.07
  5. Step 5: Solve for x
    x = 300,996,276.07/19,215.44
  6. Step 6: Final answer
    x = 15,664.29

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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.