Home / 15,370.93-21,212.31-9,402.49

Finding the Fourth Proportional to 15,370.93, 21,212.31 and 9,402.49

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Solution

The fourth proportional to 15,370.93, 21,212.31 and 9,402.49 is: 12,975.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.93 : 21,212.31 = 9,402.49 : x
  2. Step 2: Convert to fraction form
    15,370.93/21,212.31 = 9,402.49/x
  3. Step 3: Cross multiply
    15,370.93x = 21,212.31 × 9,402.49
  4. Step 4: Simplify right side
    15,370.93x = 199,448,532.65
  5. Step 5: Solve for x
    x = 199,448,532.65/15,370.93
  6. Step 6: Final answer
    x = 12,975.70

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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.