Home / 15,702.32-21,669.76-8,628.72

Finding the Fourth Proportional to 15,702.32, 21,669.76 and 8,628.72

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Solution

The fourth proportional to 15,702.32, 21,669.76 and 8,628.72 is: 11,907.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.32 : 21,669.76 = 8,628.72 : x
  2. Step 2: Convert to fraction form
    15,702.32/21,669.76 = 8,628.72/x
  3. Step 3: Cross multiply
    15,702.32x = 21,669.76 × 8,628.72
  4. Step 4: Simplify right side
    15,702.32x = 186,982,291.51
  5. Step 5: Solve for x
    x = 186,982,291.51/15,702.32
  6. Step 6: Final answer
    x = 11,907.94

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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.