Home / 21,479.03-29,639.07-12,045.77

Finding the Fourth Proportional to 21,479.03, 29,639.07 and 12,045.77

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Solution

The fourth proportional to 21,479.03, 29,639.07 and 12,045.77 is: 16,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.03 : 29,639.07 = 12,045.77 : x
  2. Step 2: Convert to fraction form
    21,479.03/29,639.07 = 12,045.77/x
  3. Step 3: Cross multiply
    21,479.03x = 29,639.07 × 12,045.77
  4. Step 4: Simplify right side
    21,479.03x = 357,025,420.23
  5. Step 5: Solve for x
    x = 357,025,420.23/21,479.03
  6. Step 6: Final answer
    x = 16,622.05

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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.