Home / 21,242.25-29,316.13-11,812.64

Finding the Fourth Proportional to 21,242.25, 29,316.13 and 11,812.64

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Solution

The fourth proportional to 21,242.25, 29,316.13 and 11,812.64 is: 16,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.25 : 29,316.13 = 11,812.64 : x
  2. Step 2: Convert to fraction form
    21,242.25/29,316.13 = 11,812.64/x
  3. Step 3: Cross multiply
    21,242.25x = 29,316.13 × 11,812.64
  4. Step 4: Simplify right side
    21,242.25x = 346,300,713.77
  5. Step 5: Solve for x
    x = 346,300,713.77/21,242.25
  6. Step 6: Final answer
    x = 16,302.45

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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.