Home / 21,520.32-29,698.02-12,088.92

Finding the Fourth Proportional to 21,520.32, 29,698.02 and 12,088.92

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Solution

The fourth proportional to 21,520.32, 29,698.02 and 12,088.92 is: 16,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.32 : 29,698.02 = 12,088.92 : x
  2. Step 2: Convert to fraction form
    21,520.32/29,698.02 = 12,088.92/x
  3. Step 3: Cross multiply
    21,520.32x = 29,698.02 × 12,088.92
  4. Step 4: Simplify right side
    21,520.32x = 359,016,987.94
  5. Step 5: Solve for x
    x = 359,016,987.94/21,520.32
  6. Step 6: Final answer
    x = 16,682.70

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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.