Home / 19,280.43-28,922.40-7,430.40

Finding the Fourth Proportional to 19,280.43, 28,922.40 and 7,430.40

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Solution

The fourth proportional to 19,280.43, 28,922.40 and 7,430.40 is: 11,146.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,280.43 : 28,922.40 = 7,430.40 : x
  2. Step 2: Convert to fraction form
    19,280.43/28,922.40 = 7,430.40/x
  3. Step 3: Cross multiply
    19,280.43x = 28,922.40 × 7,430.40
  4. Step 4: Simplify right side
    19,280.43x = 214,905,000.96
  5. Step 5: Solve for x
    x = 214,905,000.96/19,280.43
  6. Step 6: Final answer
    x = 11,146.28

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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.