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Finding the Fourth Proportional to 35,636, 49,177.76 and 19,721.52

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Solution

The fourth proportional to 35,636, 49,177.76 and 19,721.52 is: 27,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,636 : 49,177.76 = 19,721.52 : x
  2. Step 2: Convert to fraction form
    35,636/49,177.76 = 19,721.52/x
  3. Step 3: Cross multiply
    35,636x = 49,177.76 × 19,721.52
  4. Step 4: Simplify right side
    35,636x = 969,860,177.40
  5. Step 5: Solve for x
    x = 969,860,177.40/35,636
  6. Step 6: Final answer
    x = 27,215.74

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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.