Home / 20,688.36-31,032.48-7,535.34

Finding the Fourth Proportional to 20,688.36, 31,032.48 and 7,535.34

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Solution

The fourth proportional to 20,688.36, 31,032.48 and 7,535.34 is: 11,302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.36 : 31,032.48 = 7,535.34 : x
  2. Step 2: Convert to fraction form
    20,688.36/31,032.48 = 7,535.34/x
  3. Step 3: Cross multiply
    20,688.36x = 31,032.48 × 7,535.34
  4. Step 4: Simplify right side
    20,688.36x = 233,840,287.84
  5. Step 5: Solve for x
    x = 233,840,287.84/20,688.36
  6. Step 6: Final answer
    x = 11,302.99

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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.