Home / 15,309.36-21,127.71-8,594.64

Finding the Fourth Proportional to 15,309.36, 21,127.71 and 8,594.64

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Solution

The fourth proportional to 15,309.36, 21,127.71 and 8,594.64 is: 11,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.36 : 21,127.71 = 8,594.64 : x
  2. Step 2: Convert to fraction form
    15,309.36/21,127.71 = 8,594.64/x
  3. Step 3: Cross multiply
    15,309.36x = 21,127.71 × 8,594.64
  4. Step 4: Simplify right side
    15,309.36x = 181,585,061.47
  5. Step 5: Solve for x
    x = 181,585,061.47/15,309.36
  6. Step 6: Final answer
    x = 11,861.05

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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.