Home / 13,726.61-18,929.52-11,328.20

Finding the Fourth Proportional to 13,726.61, 18,929.52 and 11,328.20

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Solution

The fourth proportional to 13,726.61, 18,929.52 and 11,328.20 is: 15,622.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.61 : 18,929.52 = 11,328.20 : x
  2. Step 2: Convert to fraction form
    13,726.61/18,929.52 = 11,328.20/x
  3. Step 3: Cross multiply
    13,726.61x = 18,929.52 × 11,328.20
  4. Step 4: Simplify right side
    13,726.61x = 214,437,293.82
  5. Step 5: Solve for x
    x = 214,437,293.82/13,726.61
  6. Step 6: Final answer
    x = 15,622.02

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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.