Home / 15,476.75-21,357.34-8,403.02

Finding the Fourth Proportional to 15,476.75, 21,357.34 and 8,403.02

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Solution

The fourth proportional to 15,476.75, 21,357.34 and 8,403.02 is: 11,595.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.75 : 21,357.34 = 8,403.02 : x
  2. Step 2: Convert to fraction form
    15,476.75/21,357.34 = 8,403.02/x
  3. Step 3: Cross multiply
    15,476.75x = 21,357.34 × 8,403.02
  4. Step 4: Simplify right side
    15,476.75x = 179,466,155.17
  5. Step 5: Solve for x
    x = 179,466,155.17/15,476.75
  6. Step 6: Final answer
    x = 11,595.86

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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.