Home / 15,416.90-21,275.37-8,343.32

Finding the Fourth Proportional to 15,416.90, 21,275.37 and 8,343.32

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Solution

The fourth proportional to 15,416.90, 21,275.37 and 8,343.32 is: 11,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.90 : 21,275.37 = 8,343.32 : x
  2. Step 2: Convert to fraction form
    15,416.90/21,275.37 = 8,343.32/x
  3. Step 3: Cross multiply
    15,416.90x = 21,275.37 × 8,343.32
  4. Step 4: Simplify right side
    15,416.90x = 177,507,113.65
  5. Step 5: Solve for x
    x = 177,507,113.65/15,416.90
  6. Step 6: Final answer
    x = 11,513.80

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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.