Home / 19,748.79-29,643.66-13,220.58

Finding the Fourth Proportional to 19,748.79, 29,643.66 and 13,220.58

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Solution

The fourth proportional to 19,748.79, 29,643.66 and 13,220.58 is: 19,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,748.79 : 29,643.66 = 13,220.58 : x
  2. Step 2: Convert to fraction form
    19,748.79/29,643.66 = 13,220.58/x
  3. Step 3: Cross multiply
    19,748.79x = 29,643.66 × 13,220.58
  4. Step 4: Simplify right side
    19,748.79x = 391,906,378.52
  5. Step 5: Solve for x
    x = 391,906,378.52/19,748.79
  6. Step 6: Final answer
    x = 19,844.58

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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.