Home / 31,477.21-47,235.25-12,757.40

Finding the Fourth Proportional to 31,477.21, 47,235.25 and 12,757.40

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Solution

The fourth proportional to 31,477.21, 47,235.25 and 12,757.40 is: 19,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,477.21 : 47,235.25 = 12,757.40 : x
  2. Step 2: Convert to fraction form
    31,477.21/47,235.25 = 12,757.40/x
  3. Step 3: Cross multiply
    31,477.21x = 47,235.25 × 12,757.40
  4. Step 4: Simplify right side
    31,477.21x = 602,598,935.25
  5. Step 5: Solve for x
    x = 602,598,935.25/31,477.21
  6. Step 6: Final answer
    x = 19,143.98

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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.