Home / 20,688.24-31,059.90-10,835.40

Finding the Fourth Proportional to 20,688.24, 31,059.90 and 10,835.40

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Solution

The fourth proportional to 20,688.24, 31,059.90 and 10,835.40 is: 16,267.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.24 : 31,059.90 = 10,835.40 : x
  2. Step 2: Convert to fraction form
    20,688.24/31,059.90 = 10,835.40/x
  3. Step 3: Cross multiply
    20,688.24x = 31,059.90 × 10,835.40
  4. Step 4: Simplify right side
    20,688.24x = 336,546,440.46
  5. Step 5: Solve for x
    x = 336,546,440.46/20,688.24
  6. Step 6: Final answer
    x = 16,267.52

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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.