Home / 21,848.38-30,118.67-15,455.28

Finding the Fourth Proportional to 21,848.38, 30,118.67 and 15,455.28

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Solution

The fourth proportional to 21,848.38, 30,118.67 and 15,455.28 is: 21,305.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.38 : 30,118.67 = 15,455.28 : x
  2. Step 2: Convert to fraction form
    21,848.38/30,118.67 = 15,455.28/x
  3. Step 3: Cross multiply
    21,848.38x = 30,118.67 × 15,455.28
  4. Step 4: Simplify right side
    21,848.38x = 465,492,478.08
  5. Step 5: Solve for x
    x = 465,492,478.08/21,848.38
  6. Step 6: Final answer
    x = 21,305.58

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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.