Home / 31,518.01-47,277.02-8,142.63

Finding the Fourth Proportional to 31,518.01, 47,277.02 and 8,142.63

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Solution

The fourth proportional to 31,518.01, 47,277.02 and 8,142.63 is: 12,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.01 : 47,277.02 = 8,142.63 : x
  2. Step 2: Convert to fraction form
    31,518.01/47,277.02 = 8,142.63/x
  3. Step 3: Cross multiply
    31,518.01x = 47,277.02 × 8,142.63
  4. Step 4: Simplify right side
    31,518.01x = 384,959,281.36
  5. Step 5: Solve for x
    x = 384,959,281.36/31,518.01
  6. Step 6: Final answer
    x = 12,213.95

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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.