Home / 10,011.80-14,985.30-7,808.60

Finding the Fourth Proportional to 10,011.80, 14,985.30 and 7,808.60

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Solution

The fourth proportional to 10,011.80, 14,985.30 and 7,808.60 is: 11,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.80 : 14,985.30 = 7,808.60 : x
  2. Step 2: Convert to fraction form
    10,011.80/14,985.30 = 7,808.60/x
  3. Step 3: Cross multiply
    10,011.80x = 14,985.30 × 7,808.60
  4. Step 4: Simplify right side
    10,011.80x = 117,014,213.58
  5. Step 5: Solve for x
    x = 117,014,213.58/10,011.80
  6. Step 6: Final answer
    x = 11,687.63

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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.