Home / 13,670.02-18,864.62-7,382.39

Finding the Fourth Proportional to 13,670.02, 18,864.62 and 7,382.39

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Solution

The fourth proportional to 13,670.02, 18,864.62 and 7,382.39 is: 10,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.02 : 18,864.62 = 7,382.39 : x
  2. Step 2: Convert to fraction form
    13,670.02/18,864.62 = 7,382.39/x
  3. Step 3: Cross multiply
    13,670.02x = 18,864.62 × 7,382.39
  4. Step 4: Simplify right side
    13,670.02x = 139,266,005.37
  5. Step 5: Solve for x
    x = 139,266,005.37/13,670.02
  6. Step 6: Final answer
    x = 10,187.70

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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.