Home / 30,071.47-41,479.26-20,645.23

Finding the Fourth Proportional to 30,071.47, 41,479.26 and 20,645.23

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Solution

The fourth proportional to 30,071.47, 41,479.26 and 20,645.23 is: 28,477.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,071.47 : 41,479.26 = 20,645.23 : x
  2. Step 2: Convert to fraction form
    30,071.47/41,479.26 = 20,645.23/x
  3. Step 3: Cross multiply
    30,071.47x = 41,479.26 × 20,645.23
  4. Step 4: Simplify right side
    30,071.47x = 856,348,862.93
  5. Step 5: Solve for x
    x = 856,348,862.93/30,071.47
  6. Step 6: Final answer
    x = 28,477.12

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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.