Home / 18,951.26-28,430.40-6,470.60

Finding the Fourth Proportional to 18,951.26, 28,430.40 and 6,470.60

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Solution

The fourth proportional to 18,951.26, 28,430.40 and 6,470.60 is: 9,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.26 : 28,430.40 = 6,470.60 : x
  2. Step 2: Convert to fraction form
    18,951.26/28,430.40 = 6,470.60/x
  3. Step 3: Cross multiply
    18,951.26x = 28,430.40 × 6,470.60
  4. Step 4: Simplify right side
    18,951.26x = 183,961,746.24
  5. Step 5: Solve for x
    x = 183,961,746.24/18,951.26
  6. Step 6: Final answer
    x = 9,707.10

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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.