Home / 13,458.48-18,572.22-7,490.40

Finding the Fourth Proportional to 13,458.48, 18,572.22 and 7,490.40

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Solution

The fourth proportional to 13,458.48, 18,572.22 and 7,490.40 is: 10,336.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.48 : 18,572.22 = 7,490.40 : x
  2. Step 2: Convert to fraction form
    13,458.48/18,572.22 = 7,490.40/x
  3. Step 3: Cross multiply
    13,458.48x = 18,572.22 × 7,490.40
  4. Step 4: Simplify right side
    13,458.48x = 139,113,356.69
  5. Step 5: Solve for x
    x = 139,113,356.69/13,458.48
  6. Step 6: Final answer
    x = 10,336.48

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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.