Home / 31,372.12-47,047.74-12,647.32

Finding the Fourth Proportional to 31,372.12, 47,047.74 and 12,647.32

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Solution

The fourth proportional to 31,372.12, 47,047.74 and 12,647.32 is: 18,966.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.12 : 47,047.74 = 12,647.32 : x
  2. Step 2: Convert to fraction form
    31,372.12/47,047.74 = 12,647.32/x
  3. Step 3: Cross multiply
    31,372.12x = 47,047.74 × 12,647.32
  4. Step 4: Simplify right side
    31,372.12x = 595,027,823.06
  5. Step 5: Solve for x
    x = 595,027,823.06/31,372.12
  6. Step 6: Final answer
    x = 18,966.77

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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.