Home / 15,630.50-21,580.13-13,949.01

Finding the Fourth Proportional to 15,630.50, 21,580.13 and 13,949.01

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Solution

The fourth proportional to 15,630.50, 21,580.13 and 13,949.01 is: 19,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.50 : 21,580.13 = 13,949.01 : x
  2. Step 2: Convert to fraction form
    15,630.50/21,580.13 = 13,949.01/x
  3. Step 3: Cross multiply
    15,630.50x = 21,580.13 × 13,949.01
  4. Step 4: Simplify right side
    15,630.50x = 301,021,484.04
  5. Step 5: Solve for x
    x = 301,021,484.04/15,630.50
  6. Step 6: Final answer
    x = 19,258.59

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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.