Home / 31,631.32-47,430.86-10,563.78

Finding the Fourth Proportional to 31,631.32, 47,430.86 and 10,563.78

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Solution

The fourth proportional to 31,631.32, 47,430.86 and 10,563.78 is: 15,840.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631.32 : 47,430.86 = 10,563.78 : x
  2. Step 2: Convert to fraction form
    31,631.32/47,430.86 = 10,563.78/x
  3. Step 3: Cross multiply
    31,631.32x = 47,430.86 × 10,563.78
  4. Step 4: Simplify right side
    31,631.32x = 501,049,170.25
  5. Step 5: Solve for x
    x = 501,049,170.25/31,631.32
  6. Step 6: Final answer
    x = 15,840.29

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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.