Home / 15,613.48-21,553.63-9,955.81

Finding the Fourth Proportional to 15,613.48, 21,553.63 and 9,955.81

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Solution

The fourth proportional to 15,613.48, 21,553.63 and 9,955.81 is: 13,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.48 : 21,553.63 = 9,955.81 : x
  2. Step 2: Convert to fraction form
    15,613.48/21,553.63 = 9,955.81/x
  3. Step 3: Cross multiply
    15,613.48x = 21,553.63 × 9,955.81
  4. Step 4: Simplify right side
    15,613.48x = 214,583,845.09
  5. Step 5: Solve for x
    x = 214,583,845.09/15,613.48
  6. Step 6: Final answer
    x = 13,743.50

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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.