Home / 15,702.40-21,669.30-8,628.82

Finding the Fourth Proportional to 15,702.40, 21,669.30 and 8,628.82

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Solution

The fourth proportional to 15,702.40, 21,669.30 and 8,628.82 is: 11,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.40 : 21,669.30 = 8,628.82 : x
  2. Step 2: Convert to fraction form
    15,702.40/21,669.30 = 8,628.82/x
  3. Step 3: Cross multiply
    15,702.40x = 21,669.30 × 8,628.82
  4. Step 4: Simplify right side
    15,702.40x = 186,980,489.23
  5. Step 5: Solve for x
    x = 186,980,489.23/15,702.40
  6. Step 6: Final answer
    x = 11,907.77

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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.