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Finding the Fourth Proportional to 28,498.83, 42,748.71 and 9,800.38

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Solution

The fourth proportional to 28,498.83, 42,748.71 and 9,800.38 is: 14,700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.83 : 42,748.71 = 9,800.38 : x
  2. Step 2: Convert to fraction form
    28,498.83/42,748.71 = 9,800.38/x
  3. Step 3: Cross multiply
    28,498.83x = 42,748.71 × 9,800.38
  4. Step 4: Simplify right side
    28,498.83x = 418,953,602.51
  5. Step 5: Solve for x
    x = 418,953,602.51/28,498.83
  6. Step 6: Final answer
    x = 14,700.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.