Home / 39,918.68-59,915.10-20,211.20

Finding the Fourth Proportional to 39,918.68, 59,915.10 and 20,211.20

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Solution

The fourth proportional to 39,918.68, 59,915.10 and 20,211.20 is: 30,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,918.68 : 59,915.10 = 20,211.20 : x
  2. Step 2: Convert to fraction form
    39,918.68/59,915.10 = 20,211.20/x
  3. Step 3: Cross multiply
    39,918.68x = 59,915.10 × 20,211.20
  4. Step 4: Simplify right side
    39,918.68x = 1,210,956,069.12
  5. Step 5: Solve for x
    x = 1,210,956,069.12/39,918.68
  6. Step 6: Final answer
    x = 30,335.57

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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.