Home / 15,816.16-21,823.20-9,528.96

Finding the Fourth Proportional to 15,816.16, 21,823.20 and 9,528.96

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Solution

The fourth proportional to 15,816.16, 21,823.20 and 9,528.96 is: 13,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.16 : 21,823.20 = 9,528.96 : x
  2. Step 2: Convert to fraction form
    15,816.16/21,823.20 = 9,528.96/x
  3. Step 3: Cross multiply
    15,816.16x = 21,823.20 × 9,528.96
  4. Step 4: Simplify right side
    15,816.16x = 207,952,399.87
  5. Step 5: Solve for x
    x = 207,952,399.87/15,816.16
  6. Step 6: Final answer
    x = 13,148.10

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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.