Home / 20,897.23-28,838.14-11,465.77

Finding the Fourth Proportional to 20,897.23, 28,838.14 and 11,465.77

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Solution

The fourth proportional to 20,897.23, 28,838.14 and 11,465.77 is: 15,822.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.23 : 28,838.14 = 11,465.77 : x
  2. Step 2: Convert to fraction form
    20,897.23/28,838.14 = 11,465.77/x
  3. Step 3: Cross multiply
    20,897.23x = 28,838.14 × 11,465.77
  4. Step 4: Simplify right side
    20,897.23x = 330,651,480.47
  5. Step 5: Solve for x
    x = 330,651,480.47/20,897.23
  6. Step 6: Final answer
    x = 15,822.74

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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.