Home / 28,985.40-43,445.70-12,342.60

Finding the Fourth Proportional to 28,985.40, 43,445.70 and 12,342.60

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Solution

The fourth proportional to 28,985.40, 43,445.70 and 12,342.60 is: 18,500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.40 : 43,445.70 = 12,342.60 : x
  2. Step 2: Convert to fraction form
    28,985.40/43,445.70 = 12,342.60/x
  3. Step 3: Cross multiply
    28,985.40x = 43,445.70 × 12,342.60
  4. Step 4: Simplify right side
    28,985.40x = 536,232,896.82
  5. Step 5: Solve for x
    x = 536,232,896.82/28,985.40
  6. Step 6: Final answer
    x = 18,500.10

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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.