Home / 20,688.45-31,032.81-14,098.29

Finding the Fourth Proportional to 20,688.45, 31,032.81 and 14,098.29

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Solution

The fourth proportional to 20,688.45, 31,032.81 and 14,098.29 is: 21,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.45 : 31,032.81 = 14,098.29 : x
  2. Step 2: Convert to fraction form
    20,688.45/31,032.81 = 14,098.29/x
  3. Step 3: Cross multiply
    20,688.45x = 31,032.81 × 14,098.29
  4. Step 4: Simplify right side
    20,688.45x = 437,509,554.89
  5. Step 5: Solve for x
    x = 437,509,554.89/20,688.45
  6. Step 6: Final answer
    x = 21,147.53

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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.