Home / 21,130.67-29,160.77-11,570.96

Finding the Fourth Proportional to 21,130.67, 29,160.77 and 11,570.96

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Solution

The fourth proportional to 21,130.67, 29,160.77 and 11,570.96 is: 15,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.67 : 29,160.77 = 11,570.96 : x
  2. Step 2: Convert to fraction form
    21,130.67/29,160.77 = 11,570.96/x
  3. Step 3: Cross multiply
    21,130.67x = 29,160.77 × 11,570.96
  4. Step 4: Simplify right side
    21,130.67x = 337,417,899.58
  5. Step 5: Solve for x
    x = 337,417,899.58/21,130.67
  6. Step 6: Final answer
    x = 15,968.16

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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.