Home / 15,501.23-21,399.86-12,443.07

Finding the Fourth Proportional to 15,501.23, 21,399.86 and 12,443.07

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Solution

The fourth proportional to 15,501.23, 21,399.86 and 12,443.07 is: 17,177.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.23 : 21,399.86 = 12,443.07 : x
  2. Step 2: Convert to fraction form
    15,501.23/21,399.86 = 12,443.07/x
  3. Step 3: Cross multiply
    15,501.23x = 21,399.86 × 12,443.07
  4. Step 4: Simplify right side
    15,501.23x = 266,279,955.97
  5. Step 5: Solve for x
    x = 266,279,955.97/15,501.23
  6. Step 6: Final answer
    x = 17,177.99

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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.