Home / 28,274.60-42,403.80-8,548.40

Finding the Fourth Proportional to 28,274.60, 42,403.80 and 8,548.40

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Solution

The fourth proportional to 28,274.60, 42,403.80 and 8,548.40 is: 12,820.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.60 : 42,403.80 = 8,548.40 : x
  2. Step 2: Convert to fraction form
    28,274.60/42,403.80 = 8,548.40/x
  3. Step 3: Cross multiply
    28,274.60x = 42,403.80 × 8,548.40
  4. Step 4: Simplify right side
    28,274.60x = 362,484,643.92
  5. Step 5: Solve for x
    x = 362,484,643.92/28,274.60
  6. Step 6: Final answer
    x = 12,820.15

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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.