Home / 28,269.60-42,355.80-23,312.40

Finding the Fourth Proportional to 28,269.60, 42,355.80 and 23,312.40

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Solution

The fourth proportional to 28,269.60, 42,355.80 and 23,312.40 is: 34,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.60 : 42,355.80 = 23,312.40 : x
  2. Step 2: Convert to fraction form
    28,269.60/42,355.80 = 23,312.40/x
  3. Step 3: Cross multiply
    28,269.60x = 42,355.80 × 23,312.40
  4. Step 4: Simplify right side
    28,269.60x = 987,415,351.92
  5. Step 5: Solve for x
    x = 987,415,351.92/28,269.60
  6. Step 6: Final answer
    x = 34,928.52

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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.