Home / 31,475.31-47,191.10-13,935.57

Finding the Fourth Proportional to 31,475.31, 47,191.10 and 13,935.57

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Solution

The fourth proportional to 31,475.31, 47,191.10 and 13,935.57 is: 20,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,475.31 : 47,191.10 = 13,935.57 : x
  2. Step 2: Convert to fraction form
    31,475.31/47,191.10 = 13,935.57/x
  3. Step 3: Cross multiply
    31,475.31x = 47,191.10 × 13,935.57
  4. Step 4: Simplify right side
    31,475.31x = 657,634,807.75
  5. Step 5: Solve for x
    x = 657,634,807.75/31,475.31
  6. Step 6: Final answer
    x = 20,893.67

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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.