Home / 20,897.70-28,838.71-11,337.77

Finding the Fourth Proportional to 20,897.70, 28,838.71 and 11,337.77

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Solution

The fourth proportional to 20,897.70, 28,838.71 and 11,337.77 is: 15,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.70 : 28,838.71 = 11,337.77 : x
  2. Step 2: Convert to fraction form
    20,897.70/28,838.71 = 11,337.77/x
  3. Step 3: Cross multiply
    20,897.70x = 28,838.71 × 11,337.77
  4. Step 4: Simplify right side
    20,897.70x = 326,966,715.46
  5. Step 5: Solve for x
    x = 326,966,715.46/20,897.70
  6. Step 6: Final answer
    x = 15,646.07

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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.