Home / 15,424.63-21,286.40-8,710.40

Finding the Fourth Proportional to 15,424.63, 21,286.40 and 8,710.40

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Solution

The fourth proportional to 15,424.63, 21,286.40 and 8,710.40 is: 12,020.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.63 : 21,286.40 = 8,710.40 : x
  2. Step 2: Convert to fraction form
    15,424.63/21,286.40 = 8,710.40/x
  3. Step 3: Cross multiply
    15,424.63x = 21,286.40 × 8,710.40
  4. Step 4: Simplify right side
    15,424.63x = 185,413,068.22
  5. Step 5: Solve for x
    x = 185,413,068.22/15,424.63
  6. Step 6: Final answer
    x = 12,020.59

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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.