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Finding the Fourth Proportional to 28,177.84, 38,886.59 and 15,602.59

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Solution

The fourth proportional to 28,177.84, 38,886.59 and 15,602.59 is: 21,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.84 : 38,886.59 = 15,602.59 : x
  2. Step 2: Convert to fraction form
    28,177.84/38,886.59 = 15,602.59/x
  3. Step 3: Cross multiply
    28,177.84x = 38,886.59 × 15,602.59
  4. Step 4: Simplify right side
    28,177.84x = 606,731,247.82
  5. Step 5: Solve for x
    x = 606,731,247.82/28,177.84
  6. Step 6: Final answer
    x = 21,532.22

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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.