Home / 10,702.48-14,783.53-8,215.32

Finding the Fourth Proportional to 10,702.48, 14,783.53 and 8,215.32

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Solution

The fourth proportional to 10,702.48, 14,783.53 and 8,215.32 is: 11,347.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,702.48 : 14,783.53 = 8,215.32 : x
  2. Step 2: Convert to fraction form
    10,702.48/14,783.53 = 8,215.32/x
  3. Step 3: Cross multiply
    10,702.48x = 14,783.53 × 8,215.32
  4. Step 4: Simplify right side
    10,702.48x = 121,451,413.26
  5. Step 5: Solve for x
    x = 121,451,413.26/10,702.48
  6. Step 6: Final answer
    x = 11,347.97

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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.