Home / 28,302.80-42,454.20-18,323.60

Finding the Fourth Proportional to 28,302.80, 42,454.20 and 18,323.60

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Solution

The fourth proportional to 28,302.80, 42,454.20 and 18,323.60 is: 27,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,302.80 : 42,454.20 = 18,323.60 : x
  2. Step 2: Convert to fraction form
    28,302.80/42,454.20 = 18,323.60/x
  3. Step 3: Cross multiply
    28,302.80x = 42,454.20 × 18,323.60
  4. Step 4: Simplify right side
    28,302.80x = 777,913,779.12
  5. Step 5: Solve for x
    x = 777,913,779.12/28,302.80
  6. Step 6: Final answer
    x = 27,485.40

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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.