Home / 14,295.20-19,721.16-8,981.60

Finding the Fourth Proportional to 14,295.20, 19,721.16 and 8,981.60

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Solution

The fourth proportional to 14,295.20, 19,721.16 and 8,981.60 is: 12,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,295.20 : 19,721.16 = 8,981.60 : x
  2. Step 2: Convert to fraction form
    14,295.20/19,721.16 = 8,981.60/x
  3. Step 3: Cross multiply
    14,295.20x = 19,721.16 × 8,981.60
  4. Step 4: Simplify right side
    14,295.20x = 177,127,570.66
  5. Step 5: Solve for x
    x = 177,127,570.66/14,295.20
  6. Step 6: Final answer
    x = 12,390.70

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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.