Home / 28,142.83-38,835.47-15,393.64

Finding the Fourth Proportional to 28,142.83, 38,835.47 and 15,393.64

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Solution

The fourth proportional to 28,142.83, 38,835.47 and 15,393.64 is: 21,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.83 : 38,835.47 = 15,393.64 : x
  2. Step 2: Convert to fraction form
    28,142.83/38,835.47 = 15,393.64/x
  3. Step 3: Cross multiply
    28,142.83x = 38,835.47 × 15,393.64
  4. Step 4: Simplify right side
    28,142.83x = 597,818,973.27
  5. Step 5: Solve for x
    x = 597,818,973.27/28,142.83
  6. Step 6: Final answer
    x = 21,242.32

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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.