Home / 31,438.40-47,147.58-10,374.51

Finding the Fourth Proportional to 31,438.40, 47,147.58 and 10,374.51

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Solution

The fourth proportional to 31,438.40, 47,147.58 and 10,374.51 is: 15,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.40 : 47,147.58 = 10,374.51 : x
  2. Step 2: Convert to fraction form
    31,438.40/47,147.58 = 10,374.51/x
  3. Step 3: Cross multiply
    31,438.40x = 47,147.58 × 10,374.51
  4. Step 4: Simplify right side
    31,438.40x = 489,133,040.19
  5. Step 5: Solve for x
    x = 489,133,040.19/31,438.40
  6. Step 6: Final answer
    x = 15,558.46

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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.