Home / 15,222.48-21,002.28-8,507.16

Finding the Fourth Proportional to 15,222.48, 21,002.28 and 8,507.16

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Solution

The fourth proportional to 15,222.48, 21,002.28 and 8,507.16 is: 11,737.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.48 : 21,002.28 = 8,507.16 : x
  2. Step 2: Convert to fraction form
    15,222.48/21,002.28 = 8,507.16/x
  3. Step 3: Cross multiply
    15,222.48x = 21,002.28 × 8,507.16
  4. Step 4: Simplify right side
    15,222.48x = 178,669,756.32
  5. Step 5: Solve for x
    x = 178,669,756.32/15,222.48
  6. Step 6: Final answer
    x = 11,737.23

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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.