Home / 39,968.91-59,971.05-20,989.08

Finding the Fourth Proportional to 39,968.91, 59,971.05 and 20,989.08

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Solution

The fourth proportional to 39,968.91, 59,971.05 and 20,989.08 is: 31,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,968.91 : 59,971.05 = 20,989.08 : x
  2. Step 2: Convert to fraction form
    39,968.91/59,971.05 = 20,989.08/x
  3. Step 3: Cross multiply
    39,968.91x = 59,971.05 × 20,989.08
  4. Step 4: Simplify right side
    39,968.91x = 1,258,737,166.13
  5. Step 5: Solve for x
    x = 1,258,737,166.13/39,968.91
  6. Step 6: Final answer
    x = 31,492.91

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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.