Home / 21,320.28-31,980.42-5,737.50

Finding the Fourth Proportional to 21,320.28, 31,980.42 and 5,737.50

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Solution

The fourth proportional to 21,320.28, 31,980.42 and 5,737.50 is: 8,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.28 : 31,980.42 = 5,737.50 : x
  2. Step 2: Convert to fraction form
    21,320.28/31,980.42 = 5,737.50/x
  3. Step 3: Cross multiply
    21,320.28x = 31,980.42 × 5,737.50
  4. Step 4: Simplify right side
    21,320.28x = 183,487,659.75
  5. Step 5: Solve for x
    x = 183,487,659.75/21,320.28
  6. Step 6: Final answer
    x = 8,606.25

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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.