Home / 21,066.51-29,070.99-11,506.08

Finding the Fourth Proportional to 21,066.51, 29,070.99 and 11,506.08

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Solution

The fourth proportional to 21,066.51, 29,070.99 and 11,506.08 is: 15,877.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.51 : 29,070.99 = 11,506.08 : x
  2. Step 2: Convert to fraction form
    21,066.51/29,070.99 = 11,506.08/x
  3. Step 3: Cross multiply
    21,066.51x = 29,070.99 × 11,506.08
  4. Step 4: Simplify right side
    21,066.51x = 334,493,136.62
  5. Step 5: Solve for x
    x = 334,493,136.62/21,066.51
  6. Step 6: Final answer
    x = 15,877.96

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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.