Home / 28,265.28-42,368.76-12,674.40

Finding the Fourth Proportional to 28,265.28, 42,368.76 and 12,674.40

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Solution

The fourth proportional to 28,265.28, 42,368.76 and 12,674.40 is: 18,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.28 : 42,368.76 = 12,674.40 : x
  2. Step 2: Convert to fraction form
    28,265.28/42,368.76 = 12,674.40/x
  3. Step 3: Cross multiply
    28,265.28x = 42,368.76 × 12,674.40
  4. Step 4: Simplify right side
    28,265.28x = 536,998,611.74
  5. Step 5: Solve for x
    x = 536,998,611.74/28,265.28
  6. Step 6: Final answer
    x = 18,998.52

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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.