Home / 31,567.77-47,318.72-12,840.30

Finding the Fourth Proportional to 31,567.77, 47,318.72 and 12,840.30

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Solution

The fourth proportional to 31,567.77, 47,318.72 and 12,840.30 is: 19,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,567.77 : 47,318.72 = 12,840.30 : x
  2. Step 2: Convert to fraction form
    31,567.77/47,318.72 = 12,840.30/x
  3. Step 3: Cross multiply
    31,567.77x = 47,318.72 × 12,840.30
  4. Step 4: Simplify right side
    31,567.77x = 607,586,496.21
  5. Step 5: Solve for x
    x = 607,586,496.21/31,567.77
  6. Step 6: Final answer
    x = 19,247.05

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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.