Home / 21,080.64-29,088.16-11,649.60

Finding the Fourth Proportional to 21,080.64, 29,088.16 and 11,649.60

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Solution

The fourth proportional to 21,080.64, 29,088.16 and 11,649.60 is: 16,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.64 : 29,088.16 = 11,649.60 : x
  2. Step 2: Convert to fraction form
    21,080.64/29,088.16 = 11,649.60/x
  3. Step 3: Cross multiply
    21,080.64x = 29,088.16 × 11,649.60
  4. Step 4: Simplify right side
    21,080.64x = 338,865,428.74
  5. Step 5: Solve for x
    x = 338,865,428.74/21,080.64
  6. Step 6: Final answer
    x = 16,074.72

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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.