Home / 30,172.20-41,618.71-19,430.99

Finding the Fourth Proportional to 30,172.20, 41,618.71 and 19,430.99

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Solution

The fourth proportional to 30,172.20, 41,618.71 and 19,430.99 is: 26,802.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.20 : 41,618.71 = 19,430.99 : x
  2. Step 2: Convert to fraction form
    30,172.20/41,618.71 = 19,430.99/x
  3. Step 3: Cross multiply
    30,172.20x = 41,618.71 × 19,430.99
  4. Step 4: Simplify right side
    30,172.20x = 808,692,710.09
  5. Step 5: Solve for x
    x = 808,692,710.09/30,172.20
  6. Step 6: Final answer
    x = 26,802.58

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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.