Home / 19,271.40-28,915.20-10,512.60

Finding the Fourth Proportional to 19,271.40, 28,915.20 and 10,512.60

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Solution

The fourth proportional to 19,271.40, 28,915.20 and 10,512.60 is: 15,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.40 : 28,915.20 = 10,512.60 : x
  2. Step 2: Convert to fraction form
    19,271.40/28,915.20 = 10,512.60/x
  3. Step 3: Cross multiply
    19,271.40x = 28,915.20 × 10,512.60
  4. Step 4: Simplify right side
    19,271.40x = 303,973,931.52
  5. Step 5: Solve for x
    x = 303,973,931.52/19,271.40
  6. Step 6: Final answer
    x = 15,773.32

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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.