Home / 14,387.81-21,581.59-3,999.53

Finding the Fourth Proportional to 14,387.81, 21,581.59 and 3,999.53

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Solution

The fourth proportional to 14,387.81, 21,581.59 and 3,999.53 is: 5,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.81 : 21,581.59 = 3,999.53 : x
  2. Step 2: Convert to fraction form
    14,387.81/21,581.59 = 3,999.53/x
  3. Step 3: Cross multiply
    14,387.81x = 21,581.59 × 3,999.53
  4. Step 4: Simplify right side
    14,387.81x = 86,316,216.65
  5. Step 5: Solve for x
    x = 86,316,216.65/14,387.81
  6. Step 6: Final answer
    x = 5,999.26

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1.5x scale

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.