Home / 13,490.28-20,223.27-4,721.22

Finding the Fourth Proportional to 13,490.28, 20,223.27 and 4,721.22

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Solution

The fourth proportional to 13,490.28, 20,223.27 and 4,721.22 is: 7,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.28 : 20,223.27 = 4,721.22 : x
  2. Step 2: Convert to fraction form
    13,490.28/20,223.27 = 4,721.22/x
  3. Step 3: Cross multiply
    13,490.28x = 20,223.27 × 4,721.22
  4. Step 4: Simplify right side
    13,490.28x = 95,478,506.79
  5. Step 5: Solve for x
    x = 95,478,506.79/13,490.28
  6. Step 6: Final answer
    x = 7,077.58

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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.