Home / 13,247.86-19,865.36-7,702.80

Finding the Fourth Proportional to 13,247.86, 19,865.36 and 7,702.80

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Solution

The fourth proportional to 13,247.86, 19,865.36 and 7,702.80 is: 11,550.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.86 : 19,865.36 = 7,702.80 : x
  2. Step 2: Convert to fraction form
    13,247.86/19,865.36 = 7,702.80/x
  3. Step 3: Cross multiply
    13,247.86x = 19,865.36 × 7,702.80
  4. Step 4: Simplify right side
    13,247.86x = 153,018,895.01
  5. Step 5: Solve for x
    x = 153,018,895.01/13,247.86
  6. Step 6: Final answer
    x = 11,550.46

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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.