Home / 13,345.11-18,431.13-10,356.39

Finding the Fourth Proportional to 13,345.11, 18,431.13 and 10,356.39

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Solution

The fourth proportional to 13,345.11, 18,431.13 and 10,356.39 is: 14,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.11 : 18,431.13 = 10,356.39 : x
  2. Step 2: Convert to fraction form
    13,345.11/18,431.13 = 10,356.39/x
  3. Step 3: Cross multiply
    13,345.11x = 18,431.13 × 10,356.39
  4. Step 4: Simplify right side
    13,345.11x = 190,879,970.42
  5. Step 5: Solve for x
    x = 190,879,970.42/13,345.11
  6. Step 6: Final answer
    x = 14,303.36

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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.