Home / 21,489.59-29,655.81-12,058.35

Finding the Fourth Proportional to 21,489.59, 29,655.81 and 12,058.35

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Solution

The fourth proportional to 21,489.59, 29,655.81 and 12,058.35 is: 16,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.59 : 29,655.81 = 12,058.35 : x
  2. Step 2: Convert to fraction form
    21,489.59/29,655.81 = 12,058.35/x
  3. Step 3: Cross multiply
    21,489.59x = 29,655.81 × 12,058.35
  4. Step 4: Simplify right side
    21,489.59x = 357,600,136.51
  5. Step 5: Solve for x
    x = 357,600,136.51/21,489.59
  6. Step 6: Final answer
    x = 16,640.63

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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.