Home / 15,628.52-21,567.40-8,555.40

Finding the Fourth Proportional to 15,628.52, 21,567.40 and 8,555.40

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Solution

The fourth proportional to 15,628.52, 21,567.40 and 8,555.40 is: 11,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.52 : 21,567.40 = 8,555.40 : x
  2. Step 2: Convert to fraction form
    15,628.52/21,567.40 = 8,555.40/x
  3. Step 3: Cross multiply
    15,628.52x = 21,567.40 × 8,555.40
  4. Step 4: Simplify right side
    15,628.52x = 184,517,712.57
  5. Step 5: Solve for x
    x = 184,517,712.57/15,628.52
  6. Step 6: Final answer
    x = 11,806.47

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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.