Home / 28,243.90-42,370.71-11,612.98

Finding the Fourth Proportional to 28,243.90, 42,370.71 and 11,612.98

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Solution

The fourth proportional to 28,243.90, 42,370.71 and 11,612.98 is: 17,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.90 : 42,370.71 = 11,612.98 : x
  2. Step 2: Convert to fraction form
    28,243.90/42,370.71 = 11,612.98/x
  3. Step 3: Cross multiply
    28,243.90x = 42,370.71 × 11,612.98
  4. Step 4: Simplify right side
    28,243.90x = 492,050,207.82
  5. Step 5: Solve for x
    x = 492,050,207.82/28,243.90
  6. Step 6: Final answer
    x = 17,421.47

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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.