Home / 15,054.18-20,772.80-8,681.01

Finding the Fourth Proportional to 15,054.18, 20,772.80 and 8,681.01

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Solution

The fourth proportional to 15,054.18, 20,772.80 and 8,681.01 is: 11,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.18 : 20,772.80 = 8,681.01 : x
  2. Step 2: Convert to fraction form
    15,054.18/20,772.80 = 8,681.01/x
  3. Step 3: Cross multiply
    15,054.18x = 20,772.80 × 8,681.01
  4. Step 4: Simplify right side
    15,054.18x = 180,328,884.53
  5. Step 5: Solve for x
    x = 180,328,884.53/15,054.18
  6. Step 6: Final answer
    x = 11,978.66

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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.