Home / 10,422.10-14,389.05-6,445.45

Finding the Fourth Proportional to 10,422.10, 14,389.05 and 6,445.45

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Solution

The fourth proportional to 10,422.10, 14,389.05 and 6,445.45 is: 8,898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,422.10 : 14,389.05 = 6,445.45 : x
  2. Step 2: Convert to fraction form
    10,422.10/14,389.05 = 6,445.45/x
  3. Step 3: Cross multiply
    10,422.10x = 14,389.05 × 6,445.45
  4. Step 4: Simplify right side
    10,422.10x = 92,743,902.32
  5. Step 5: Solve for x
    x = 92,743,902.32/10,422.10
  6. Step 6: Final answer
    x = 8,898.77

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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.