Home / 28,915.80-43,365.60-9,200.40

Finding the Fourth Proportional to 28,915.80, 43,365.60 and 9,200.40

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Solution

The fourth proportional to 28,915.80, 43,365.60 and 9,200.40 is: 13,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.80 : 43,365.60 = 9,200.40 : x
  2. Step 2: Convert to fraction form
    28,915.80/43,365.60 = 9,200.40/x
  3. Step 3: Cross multiply
    28,915.80x = 43,365.60 × 9,200.40
  4. Step 4: Simplify right side
    28,915.80x = 398,980,866.24
  5. Step 5: Solve for x
    x = 398,980,866.24/28,915.80
  6. Step 6: Final answer
    x = 13,798.02

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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.