Home / 13,385.37-18,471.95-7,417.11

Finding the Fourth Proportional to 13,385.37, 18,471.95 and 7,417.11

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Solution

The fourth proportional to 13,385.37, 18,471.95 and 7,417.11 is: 10,235.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.37 : 18,471.95 = 7,417.11 : x
  2. Step 2: Convert to fraction form
    13,385.37/18,471.95 = 7,417.11/x
  3. Step 3: Cross multiply
    13,385.37x = 18,471.95 × 7,417.11
  4. Step 4: Simplify right side
    13,385.37x = 137,008,447.98
  5. Step 5: Solve for x
    x = 137,008,447.98/13,385.37
  6. Step 6: Final answer
    x = 10,235.69

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Half scale
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Double scale
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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.