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Finding the Fourth Proportional to 28,203.98, 38,916.55 and 16,098.93

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Solution

The fourth proportional to 28,203.98, 38,916.55 and 16,098.93 is: 22,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.98 : 38,916.55 = 16,098.93 : x
  2. Step 2: Convert to fraction form
    28,203.98/38,916.55 = 16,098.93/x
  3. Step 3: Cross multiply
    28,203.98x = 38,916.55 × 16,098.93
  4. Step 4: Simplify right side
    28,203.98x = 626,514,814.29
  5. Step 5: Solve for x
    x = 626,514,814.29/28,203.98
  6. Step 6: Final answer
    x = 22,213.70

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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.