Home / 15,756.16-21,736.80-11,557.12

Finding the Fourth Proportional to 15,756.16, 21,736.80 and 11,557.12

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Solution

The fourth proportional to 15,756.16, 21,736.80 and 11,557.12 is: 15,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.16 : 21,736.80 = 11,557.12 : x
  2. Step 2: Convert to fraction form
    15,756.16/21,736.80 = 11,557.12/x
  3. Step 3: Cross multiply
    15,756.16x = 21,736.80 × 11,557.12
  4. Step 4: Simplify right side
    15,756.16x = 251,214,806.02
  5. Step 5: Solve for x
    x = 251,214,806.02/15,756.16
  6. Step 6: Final answer
    x = 15,943.91

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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.