Home / 21,439.47-29,588.66-12,365.19

Finding the Fourth Proportional to 21,439.47, 29,588.66 and 12,365.19

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Solution

The fourth proportional to 21,439.47, 29,588.66 and 12,365.19 is: 17,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.47 : 29,588.66 = 12,365.19 : x
  2. Step 2: Convert to fraction form
    21,439.47/29,588.66 = 12,365.19/x
  3. Step 3: Cross multiply
    21,439.47x = 29,588.66 × 12,365.19
  4. Step 4: Simplify right side
    21,439.47x = 365,869,254.80
  5. Step 5: Solve for x
    x = 365,869,254.80/21,439.47
  6. Step 6: Final answer
    x = 17,065.22

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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.