Home / 10,621.09-14,656.12-5,905.09

Finding the Fourth Proportional to 10,621.09, 14,656.12 and 5,905.09

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Solution

The fourth proportional to 10,621.09, 14,656.12 and 5,905.09 is: 8,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.09 : 14,656.12 = 5,905.09 : x
  2. Step 2: Convert to fraction form
    10,621.09/14,656.12 = 5,905.09/x
  3. Step 3: Cross multiply
    10,621.09x = 14,656.12 × 5,905.09
  4. Step 4: Simplify right side
    10,621.09x = 86,545,707.65
  5. Step 5: Solve for x
    x = 86,545,707.65/10,621.09
  6. Step 6: Final answer
    x = 8,148.48

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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.