Home / 15,816.79-21,828.10-9,102.27

Finding the Fourth Proportional to 15,816.79, 21,828.10 and 9,102.27

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Solution

The fourth proportional to 15,816.79, 21,828.10 and 9,102.27 is: 12,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.79 : 21,828.10 = 9,102.27 : x
  2. Step 2: Convert to fraction form
    15,816.79/21,828.10 = 9,102.27/x
  3. Step 3: Cross multiply
    15,816.79x = 21,828.10 × 9,102.27
  4. Step 4: Simplify right side
    15,816.79x = 198,685,173.40
  5. Step 5: Solve for x
    x = 198,685,173.40/15,816.79
  6. Step 6: Final answer
    x = 12,561.67

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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.