Home / 31,632.55-47,430.87-12,890.64

Finding the Fourth Proportional to 31,632.55, 47,430.87 and 12,890.64

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Solution

The fourth proportional to 31,632.55, 47,430.87 and 12,890.64 is: 19,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,632.55 : 47,430.87 = 12,890.64 : x
  2. Step 2: Convert to fraction form
    31,632.55/47,430.87 = 12,890.64/x
  3. Step 3: Cross multiply
    31,632.55x = 47,430.87 × 12,890.64
  4. Step 4: Simplify right side
    31,632.55x = 611,414,205.60
  5. Step 5: Solve for x
    x = 611,414,205.60/31,632.55
  6. Step 6: Final answer
    x = 19,328.64

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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.