Home / 15,319.10-21,148.41-10,309.65

Finding the Fourth Proportional to 15,319.10, 21,148.41 and 10,309.65

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Solution

The fourth proportional to 15,319.10, 21,148.41 and 10,309.65 is: 14,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.10 : 21,148.41 = 10,309.65 : x
  2. Step 2: Convert to fraction form
    15,319.10/21,148.41 = 10,309.65/x
  3. Step 3: Cross multiply
    15,319.10x = 21,148.41 × 10,309.65
  4. Step 4: Simplify right side
    15,319.10x = 218,032,705.16
  5. Step 5: Solve for x
    x = 218,032,705.16/15,319.10
  6. Step 6: Final answer
    x = 14,232.74

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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.