Home / 15,528.73-21,429.51-8,455.13

Finding the Fourth Proportional to 15,528.73, 21,429.51 and 8,455.13

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Solution

The fourth proportional to 15,528.73, 21,429.51 and 8,455.13 is: 11,668.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.73 : 21,429.51 = 8,455.13 : x
  2. Step 2: Convert to fraction form
    15,528.73/21,429.51 = 8,455.13/x
  3. Step 3: Cross multiply
    15,528.73x = 21,429.51 × 8,455.13
  4. Step 4: Simplify right side
    15,528.73x = 181,189,292.89
  5. Step 5: Solve for x
    x = 181,189,292.89/15,528.73
  6. Step 6: Final answer
    x = 11,668.00

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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.