Home / 15,528.52-21,428.67-8,454.94

Finding the Fourth Proportional to 15,528.52, 21,428.67 and 8,454.94

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Solution

The fourth proportional to 15,528.52, 21,428.67 and 8,454.94 is: 11,667.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.52 : 21,428.67 = 8,454.94 : x
  2. Step 2: Convert to fraction form
    15,528.52/21,428.67 = 8,454.94/x
  3. Step 3: Cross multiply
    15,528.52x = 21,428.67 × 8,454.94
  4. Step 4: Simplify right side
    15,528.52x = 181,178,119.13
  5. Step 5: Solve for x
    x = 181,178,119.13/15,528.52
  6. Step 6: Final answer
    x = 11,667.44

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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.