Home / 12,924.20-19,386.30-10,980.20

Finding the Fourth Proportional to 12,924.20, 19,386.30 and 10,980.20

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Solution

The fourth proportional to 12,924.20, 19,386.30 and 10,980.20 is: 16,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,924.20 : 19,386.30 = 10,980.20 : x
  2. Step 2: Convert to fraction form
    12,924.20/19,386.30 = 10,980.20/x
  3. Step 3: Cross multiply
    12,924.20x = 19,386.30 × 10,980.20
  4. Step 4: Simplify right side
    12,924.20x = 212,865,451.26
  5. Step 5: Solve for x
    x = 212,865,451.26/12,924.20
  6. Step 6: Final answer
    x = 16,470.30

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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.