Home / 10,809.06-14,915.41-7,977.98

Finding the Fourth Proportional to 10,809.06, 14,915.41 and 7,977.98

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Solution

The fourth proportional to 10,809.06, 14,915.41 and 7,977.98 is: 11,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,809.06 : 14,915.41 = 7,977.98 : x
  2. Step 2: Convert to fraction form
    10,809.06/14,915.41 = 7,977.98/x
  3. Step 3: Cross multiply
    10,809.06x = 14,915.41 × 7,977.98
  4. Step 4: Simplify right side
    10,809.06x = 118,994,842.67
  5. Step 5: Solve for x
    x = 118,994,842.67/10,809.06
  6. Step 6: Final answer
    x = 11,008.81

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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.