Home / 13,730.48-20,603.28-7,490.24

Finding the Fourth Proportional to 13,730.48, 20,603.28 and 7,490.24

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Solution

The fourth proportional to 13,730.48, 20,603.28 and 7,490.24 is: 11,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.48 : 20,603.28 = 7,490.24 : x
  2. Step 2: Convert to fraction form
    13,730.48/20,603.28 = 7,490.24/x
  3. Step 3: Cross multiply
    13,730.48x = 20,603.28 × 7,490.24
  4. Step 4: Simplify right side
    13,730.48x = 154,323,511.99
  5. Step 5: Solve for x
    x = 154,323,511.99/13,730.48
  6. Step 6: Final answer
    x = 11,239.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.