Home / 28,616.60-42,924.90-19,285.40

Finding the Fourth Proportional to 28,616.60, 42,924.90 and 19,285.40

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Solution

The fourth proportional to 28,616.60, 42,924.90 and 19,285.40 is: 28,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.60 : 42,924.90 = 19,285.40 : x
  2. Step 2: Convert to fraction form
    28,616.60/42,924.90 = 19,285.40/x
  3. Step 3: Cross multiply
    28,616.60x = 42,924.90 × 19,285.40
  4. Step 4: Simplify right side
    28,616.60x = 827,823,866.46
  5. Step 5: Solve for x
    x = 827,823,866.46/28,616.60
  6. Step 6: Final answer
    x = 28,928.10

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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.