Home / 13,730.69-18,931.55-11,602.43

Finding the Fourth Proportional to 13,730.69, 18,931.55 and 11,602.43

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Solution

The fourth proportional to 13,730.69, 18,931.55 and 11,602.43 is: 15,997.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.69 : 18,931.55 = 11,602.43 : x
  2. Step 2: Convert to fraction form
    13,730.69/18,931.55 = 11,602.43/x
  3. Step 3: Cross multiply
    13,730.69x = 18,931.55 × 11,602.43
  4. Step 4: Simplify right side
    13,730.69x = 219,651,983.67
  5. Step 5: Solve for x
    x = 219,651,983.67/13,730.69
  6. Step 6: Final answer
    x = 15,997.16

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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.