Home / 15,528.24-21,428.52-8,454.48

Finding the Fourth Proportional to 15,528.24, 21,428.52 and 8,454.48

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Solution

The fourth proportional to 15,528.24, 21,428.52 and 8,454.48 is: 11,666.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.24 : 21,428.52 = 8,454.48 : x
  2. Step 2: Convert to fraction form
    15,528.24/21,428.52 = 8,454.48/x
  3. Step 3: Cross multiply
    15,528.24x = 21,428.52 × 8,454.48
  4. Step 4: Simplify right side
    15,528.24x = 181,166,993.77
  5. Step 5: Solve for x
    x = 181,166,993.77/15,528.24
  6. Step 6: Final answer
    x = 11,666.94

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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.