Home / 13,458.08-18,572.10-7,490

Finding the Fourth Proportional to 13,458.08, 18,572.10 and 7,490

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Solution

The fourth proportional to 13,458.08, 18,572.10 and 7,490 is: 10,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.08 : 18,572.10 = 7,490 : x
  2. Step 2: Convert to fraction form
    13,458.08/18,572.10 = 7,490/x
  3. Step 3: Cross multiply
    13,458.08x = 18,572.10 × 7,490
  4. Step 4: Simplify right side
    13,458.08x = 139,105,029
  5. Step 5: Solve for x
    x = 139,105,029/13,458.08
  6. Step 6: Final answer
    x = 10,336.17

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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.