Home / 10,420.16-15,631.46-4,182.35

Finding the Fourth Proportional to 10,420.16, 15,631.46 and 4,182.35

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Solution

The fourth proportional to 10,420.16, 15,631.46 and 4,182.35 is: 6,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.16 : 15,631.46 = 4,182.35 : x
  2. Step 2: Convert to fraction form
    10,420.16/15,631.46 = 4,182.35/x
  3. Step 3: Cross multiply
    10,420.16x = 15,631.46 × 4,182.35
  4. Step 4: Simplify right side
    10,420.16x = 65,376,215.82
  5. Step 5: Solve for x
    x = 65,376,215.82/10,420.16
  6. Step 6: Final answer
    x = 6,274.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.