Home / 15,528.67-21,429.95-8,455.48

Finding the Fourth Proportional to 15,528.67, 21,429.95 and 8,455.48

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Solution

The fourth proportional to 15,528.67, 21,429.95 and 8,455.48 is: 11,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.67 : 21,429.95 = 8,455.48 : x
  2. Step 2: Convert to fraction form
    15,528.67/21,429.95 = 8,455.48/x
  3. Step 3: Cross multiply
    15,528.67x = 21,429.95 × 8,455.48
  4. Step 4: Simplify right side
    15,528.67x = 181,200,513.63
  5. Step 5: Solve for x
    x = 181,200,513.63/15,528.67
  6. Step 6: Final answer
    x = 11,668.77

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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.