Home / 34,085.71-47,028.80-20,470.12

Finding the Fourth Proportional to 34,085.71, 47,028.80 and 20,470.12

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Solution

The fourth proportional to 34,085.71, 47,028.80 and 20,470.12 is: 28,243.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,085.71 : 47,028.80 = 20,470.12 : x
  2. Step 2: Convert to fraction form
    34,085.71/47,028.80 = 20,470.12/x
  3. Step 3: Cross multiply
    34,085.71x = 47,028.80 × 20,470.12
  4. Step 4: Simplify right side
    34,085.71x = 962,685,113.06
  5. Step 5: Solve for x
    x = 962,685,113.06/34,085.71
  6. Step 6: Final answer
    x = 28,243.07

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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.