Home / 28,607.28-42,919.74-12,825.60

Finding the Fourth Proportional to 28,607.28, 42,919.74 and 12,825.60

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Solution

The fourth proportional to 28,607.28, 42,919.74 and 12,825.60 is: 19,242.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,607.28 : 42,919.74 = 12,825.60 : x
  2. Step 2: Convert to fraction form
    28,607.28/42,919.74 = 12,825.60/x
  3. Step 3: Cross multiply
    28,607.28x = 42,919.74 × 12,825.60
  4. Step 4: Simplify right side
    28,607.28x = 550,471,417.34
  5. Step 5: Solve for x
    x = 550,471,417.34/28,607.28
  6. Step 6: Final answer
    x = 19,242.35

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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.