Home / 28,485.72-42,730.40-10,955.55

Finding the Fourth Proportional to 28,485.72, 42,730.40 and 10,955.55

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Solution

The fourth proportional to 28,485.72, 42,730.40 and 10,955.55 is: 16,434.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.72 : 42,730.40 = 10,955.55 : x
  2. Step 2: Convert to fraction form
    28,485.72/42,730.40 = 10,955.55/x
  3. Step 3: Cross multiply
    28,485.72x = 42,730.40 × 10,955.55
  4. Step 4: Simplify right side
    28,485.72x = 468,135,033.72
  5. Step 5: Solve for x
    x = 468,135,033.72/28,485.72
  6. Step 6: Final answer
    x = 16,434.02

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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.