Home / 30,328,013.20-45,492,214.20-12,133,728.40

Finding the Fourth Proportional to 30,328,013.20, 45,492,214.20 and 12,133,728.40

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Solution

The fourth proportional to 30,328,013.20, 45,492,214.20 and 12,133,728.40 is: 18,200,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328,013.20 : 45,492,214.20 = 12,133,728.40 : x
  2. Step 2: Convert to fraction form
    30,328,013.20/45,492,214.20 = 12,133,728.40/x
  3. Step 3: Cross multiply
    30,328,013.20x = 45,492,214.20 × 12,133,728.40
  4. Step 4: Simplify right side
    30,328,013.20x = 551,990,171,417,423.31
  5. Step 5: Solve for x
    x = 551,990,171,417,423.31/30,328,013.20
  6. Step 6: Final answer
    x = 18,200,670.38

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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.