Home / 21,088.64-29,102.91-11,657.81

Finding the Fourth Proportional to 21,088.64, 29,102.91 and 11,657.81

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Solution

The fourth proportional to 21,088.64, 29,102.91 and 11,657.81 is: 16,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.64 : 29,102.91 = 11,657.81 : x
  2. Step 2: Convert to fraction form
    21,088.64/29,102.91 = 11,657.81/x
  3. Step 3: Cross multiply
    21,088.64x = 29,102.91 × 11,657.81
  4. Step 4: Simplify right side
    21,088.64x = 339,276,195.23
  5. Step 5: Solve for x
    x = 339,276,195.23/21,088.64
  6. Step 6: Final answer
    x = 16,088.10

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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.