Home / 28,216.24-42,343.80-12,651.28

Finding the Fourth Proportional to 28,216.24, 42,343.80 and 12,651.28

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Solution

The fourth proportional to 28,216.24, 42,343.80 and 12,651.28 is: 18,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.24 : 42,343.80 = 12,651.28 : x
  2. Step 2: Convert to fraction form
    28,216.24/42,343.80 = 12,651.28/x
  3. Step 3: Cross multiply
    28,216.24x = 42,343.80 × 12,651.28
  4. Step 4: Simplify right side
    28,216.24x = 535,703,270.06
  5. Step 5: Solve for x
    x = 535,703,270.06/28,216.24
  6. Step 6: Final answer
    x = 18,985.64

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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.