Home / 39,539.10-59,289.45-21,990.30

Finding the Fourth Proportional to 39,539.10, 59,289.45 and 21,990.30

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Solution

The fourth proportional to 39,539.10, 59,289.45 and 21,990.30 is: 32,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,539.10 : 59,289.45 = 21,990.30 : x
  2. Step 2: Convert to fraction form
    39,539.10/59,289.45 = 21,990.30/x
  3. Step 3: Cross multiply
    39,539.10x = 59,289.45 × 21,990.30
  4. Step 4: Simplify right side
    39,539.10x = 1,303,792,792.34
  5. Step 5: Solve for x
    x = 1,303,792,792.34/39,539.10
  6. Step 6: Final answer
    x = 32,974.77

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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.