Home / 28,520.98-42,758.36-11,893.48

Finding the Fourth Proportional to 28,520.98, 42,758.36 and 11,893.48

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Solution

The fourth proportional to 28,520.98, 42,758.36 and 11,893.48 is: 17,830.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.98 : 42,758.36 = 11,893.48 : x
  2. Step 2: Convert to fraction form
    28,520.98/42,758.36 = 11,893.48/x
  3. Step 3: Cross multiply
    28,520.98x = 42,758.36 × 11,893.48
  4. Step 4: Simplify right side
    28,520.98x = 508,545,699.49
  5. Step 5: Solve for x
    x = 508,545,699.49/28,520.98
  6. Step 6: Final answer
    x = 17,830.58

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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.