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Finding the Fourth Proportional to 28,010.69, 42,019.10 and 11,368.30

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Solution

The fourth proportional to 28,010.69, 42,019.10 and 11,368.30 is: 17,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.69 : 42,019.10 = 11,368.30 : x
  2. Step 2: Convert to fraction form
    28,010.69/42,019.10 = 11,368.30/x
  3. Step 3: Cross multiply
    28,010.69x = 42,019.10 × 11,368.30
  4. Step 4: Simplify right side
    28,010.69x = 477,685,758.00
  5. Step 5: Solve for x
    x = 477,685,758.00/28,010.69
  6. Step 6: Final answer
    x = 17,053.70

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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.