Home / 32,011.20-47,998.80-12,290.40

Finding the Fourth Proportional to 32,011.20, 47,998.80 and 12,290.40

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Solution

The fourth proportional to 32,011.20, 47,998.80 and 12,290.40 is: 18,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,011.20 : 47,998.80 = 12,290.40 : x
  2. Step 2: Convert to fraction form
    32,011.20/47,998.80 = 12,290.40/x
  3. Step 3: Cross multiply
    32,011.20x = 47,998.80 × 12,290.40
  4. Step 4: Simplify right side
    32,011.20x = 589,924,451.52
  5. Step 5: Solve for x
    x = 589,924,451.52/32,011.20
  6. Step 6: Final answer
    x = 18,428.69

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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.