Home / 19,400.10-29,114.55-7,721.70

Finding the Fourth Proportional to 19,400.10, 29,114.55 and 7,721.70

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Solution

The fourth proportional to 19,400.10, 29,114.55 and 7,721.70 is: 11,588.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.10 : 29,114.55 = 7,721.70 : x
  2. Step 2: Convert to fraction form
    19,400.10/29,114.55 = 7,721.70/x
  3. Step 3: Cross multiply
    19,400.10x = 29,114.55 × 7,721.70
  4. Step 4: Simplify right side
    19,400.10x = 224,813,820.74
  5. Step 5: Solve for x
    x = 224,813,820.74/19,400.10
  6. Step 6: Final answer
    x = 11,588.28

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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.