Home / 31,890.40-47,835.58-14,339.72

Finding the Fourth Proportional to 31,890.40, 47,835.58 and 14,339.72

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Solution

The fourth proportional to 31,890.40, 47,835.58 and 14,339.72 is: 21,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.40 : 47,835.58 = 14,339.72 : x
  2. Step 2: Convert to fraction form
    31,890.40/47,835.58 = 14,339.72/x
  3. Step 3: Cross multiply
    31,890.40x = 47,835.58 × 14,339.72
  4. Step 4: Simplify right side
    31,890.40x = 685,948,823.24
  5. Step 5: Solve for x
    x = 685,948,823.24/31,890.40
  6. Step 6: Final answer
    x = 21,509.57

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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.