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Finding the Fourth Proportional to 19,000.98, 28,505.13 and 7,901.70

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Solution

The fourth proportional to 19,000.98, 28,505.13 and 7,901.70 is: 11,854.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.98 : 28,505.13 = 7,901.70 : x
  2. Step 2: Convert to fraction form
    19,000.98/28,505.13 = 7,901.70/x
  3. Step 3: Cross multiply
    19,000.98x = 28,505.13 × 7,901.70
  4. Step 4: Simplify right side
    19,000.98x = 225,238,985.72
  5. Step 5: Solve for x
    x = 225,238,985.72/19,000.98
  6. Step 6: Final answer
    x = 11,854.07

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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.