Home / 21,707.37-29,929.91-18,344.25

Finding the Fourth Proportional to 21,707.37, 29,929.91 and 18,344.25

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Solution

The fourth proportional to 21,707.37, 29,929.91 and 18,344.25 is: 25,292.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.37 : 29,929.91 = 18,344.25 : x
  2. Step 2: Convert to fraction form
    21,707.37/29,929.91 = 18,344.25/x
  3. Step 3: Cross multiply
    21,707.37x = 29,929.91 × 18,344.25
  4. Step 4: Simplify right side
    21,707.37x = 549,041,659.80
  5. Step 5: Solve for x
    x = 549,041,659.80/21,707.37
  6. Step 6: Final answer
    x = 25,292.87

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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.