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Finding the Fourth Proportional to 28,602.80, 42,904.20 and 23,645.60

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Solution

The fourth proportional to 28,602.80, 42,904.20 and 23,645.60 is: 35,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.80 : 42,904.20 = 23,645.60 : x
  2. Step 2: Convert to fraction form
    28,602.80/42,904.20 = 23,645.60/x
  3. Step 3: Cross multiply
    28,602.80x = 42,904.20 × 23,645.60
  4. Step 4: Simplify right side
    28,602.80x = 1,014,495,551.52
  5. Step 5: Solve for x
    x = 1,014,495,551.52/28,602.80
  6. Step 6: Final answer
    x = 35,468.40

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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.