Home / 12,479.04-18,721.44-6,641.28

Finding the Fourth Proportional to 12,479.04, 18,721.44 and 6,641.28

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Solution

The fourth proportional to 12,479.04, 18,721.44 and 6,641.28 is: 9,963.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.04 : 18,721.44 = 6,641.28 : x
  2. Step 2: Convert to fraction form
    12,479.04/18,721.44 = 6,641.28/x
  3. Step 3: Cross multiply
    12,479.04x = 18,721.44 × 6,641.28
  4. Step 4: Simplify right side
    12,479.04x = 124,334,325.04
  5. Step 5: Solve for x
    x = 124,334,325.04/12,479.04
  6. Step 6: Final answer
    x = 9,963.45

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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.