Home / 12,577.90-18,877.80-5,187.66

Finding the Fourth Proportional to 12,577.90, 18,877.80 and 5,187.66

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Solution

The fourth proportional to 12,577.90, 18,877.80 and 5,187.66 is: 7,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,577.90 : 18,877.80 = 5,187.66 : x
  2. Step 2: Convert to fraction form
    12,577.90/18,877.80 = 5,187.66/x
  3. Step 3: Cross multiply
    12,577.90x = 18,877.80 × 5,187.66
  4. Step 4: Simplify right side
    12,577.90x = 97,931,607.95
  5. Step 5: Solve for x
    x = 97,931,607.95/12,577.90
  6. Step 6: Final answer
    x = 7,786.01

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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.