Home / 12,989.48-19,482.28-4,223.12

Finding the Fourth Proportional to 12,989.48, 19,482.28 and 4,223.12

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Solution

The fourth proportional to 12,989.48, 19,482.28 and 4,223.12 is: 6,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.48 : 19,482.28 = 4,223.12 : x
  2. Step 2: Convert to fraction form
    12,989.48/19,482.28 = 4,223.12/x
  3. Step 3: Cross multiply
    12,989.48x = 19,482.28 × 4,223.12
  4. Step 4: Simplify right side
    12,989.48x = 82,276,006.31
  5. Step 5: Solve for x
    x = 82,276,006.31/12,989.48
  6. Step 6: Final answer
    x = 6,334.05

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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.