Home / 10,312.86-14,220.99-6,120.30

Finding the Fourth Proportional to 10,312.86, 14,220.99 and 6,120.30

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Solution

The fourth proportional to 10,312.86, 14,220.99 and 6,120.30 is: 8,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.86 : 14,220.99 = 6,120.30 : x
  2. Step 2: Convert to fraction form
    10,312.86/14,220.99 = 6,120.30/x
  3. Step 3: Cross multiply
    10,312.86x = 14,220.99 × 6,120.30
  4. Step 4: Simplify right side
    10,312.86x = 87,036,725.10
  5. Step 5: Solve for x
    x = 87,036,725.10/10,312.86
  6. Step 6: Final answer
    x = 8,439.63

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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.