Home / 10,899.06-15,038.66-6,424.21

Finding the Fourth Proportional to 10,899.06, 15,038.66 and 6,424.21

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Solution

The fourth proportional to 10,899.06, 15,038.66 and 6,424.21 is: 8,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.06 : 15,038.66 = 6,424.21 : x
  2. Step 2: Convert to fraction form
    10,899.06/15,038.66 = 6,424.21/x
  3. Step 3: Cross multiply
    10,899.06x = 15,038.66 × 6,424.21
  4. Step 4: Simplify right side
    10,899.06x = 96,611,544.82
  5. Step 5: Solve for x
    x = 96,611,544.82/10,899.06
  6. Step 6: Final answer
    x = 8,864.21

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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.