Home / 15,528.92-21,430.04-8,455.32

Finding the Fourth Proportional to 15,528.92, 21,430.04 and 8,455.32

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Solution

The fourth proportional to 15,528.92, 21,430.04 and 8,455.32 is: 11,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.92 : 21,430.04 = 8,455.32 : x
  2. Step 2: Convert to fraction form
    15,528.92/21,430.04 = 8,455.32/x
  3. Step 3: Cross multiply
    15,528.92x = 21,430.04 × 8,455.32
  4. Step 4: Simplify right side
    15,528.92x = 181,197,803.54
  5. Step 5: Solve for x
    x = 181,197,803.54/15,528.92
  6. Step 6: Final answer
    x = 11,668.41

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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.