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Finding the Fourth Proportional to 20,772,000.35, 31,158,000.53 and 20,772,000.35

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Solution

The fourth proportional to 20,772,000.35, 31,158,000.53 and 20,772,000.35 is: 31,158,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772,000.35 : 31,158,000.53 = 20,772,000.35 : x
  2. Step 2: Convert to fraction form
    20,772,000.35/31,158,000.53 = 20,772,000.35/x
  3. Step 3: Cross multiply
    20,772,000.35x = 31,158,000.53 × 20,772,000.35
  4. Step 4: Simplify right side
    20,772,000.35x = 647,213,997,810,600.25
  5. Step 5: Solve for x
    x = 647,213,997,810,600.25/20,772,000.35
  6. Step 6: Final answer
    x = 31,158,000.53

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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.