Home / 20,718,667.20-31,078,000.80-16,435,646.40

Finding the Fourth Proportional to 20,718,667.20, 31,078,000.80 and 16,435,646.40

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Solution

The fourth proportional to 20,718,667.20, 31,078,000.80 and 16,435,646.40 is: 24,653,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,667.20 : 31,078,000.80 = 16,435,646.40 : x
  2. Step 2: Convert to fraction form
    20,718,667.20/31,078,000.80 = 16,435,646.40/x
  3. Step 3: Cross multiply
    20,718,667.20x = 31,078,000.80 × 16,435,646.40
  4. Step 4: Simplify right side
    20,718,667.20x = 510,787,031,967,717.12
  5. Step 5: Solve for x
    x = 510,787,031,967,717.12/20,718,667.20
  6. Step 6: Final answer
    x = 24,653,469.60

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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.