Home / 30,528.80-45,793.20-28,001.60

Finding the Fourth Proportional to 30,528.80, 45,793.20 and 28,001.60

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Solution

The fourth proportional to 30,528.80, 45,793.20 and 28,001.60 is: 42,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.80 : 45,793.20 = 28,001.60 : x
  2. Step 2: Convert to fraction form
    30,528.80/45,793.20 = 28,001.60/x
  3. Step 3: Cross multiply
    30,528.80x = 45,793.20 × 28,001.60
  4. Step 4: Simplify right side
    30,528.80x = 1,282,282,869.12
  5. Step 5: Solve for x
    x = 1,282,282,869.12/30,528.80
  6. Step 6: Final answer
    x = 42,002.40

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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.