Home / 15,528.92-21,429.18-8,455.32

Finding the Fourth Proportional to 15,528.92, 21,429.18 and 8,455.32

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Solution

The fourth proportional to 15,528.92, 21,429.18 and 8,455.32 is: 11,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.92 : 21,429.18 = 8,455.32 : x
  2. Step 2: Convert to fraction form
    15,528.92/21,429.18 = 8,455.32/x
  3. Step 3: Cross multiply
    15,528.92x = 21,429.18 × 8,455.32
  4. Step 4: Simplify right side
    15,528.92x = 181,190,574.24
  5. Step 5: Solve for x
    x = 181,190,574.24/15,528.92
  6. Step 6: Final answer
    x = 11,667.94

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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.