Home / 31,500,971.40-47,156,978.70-18,714,894.60

Finding the Fourth Proportional to 31,500,971.40, 47,156,978.70 and 18,714,894.60

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Solution

The fourth proportional to 31,500,971.40, 47,156,978.70 and 18,714,894.60 is: 28,016,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500,971.40 : 47,156,978.70 = 18,714,894.60 : x
  2. Step 2: Convert to fraction form
    31,500,971.40/47,156,978.70 = 18,714,894.60/x
  3. Step 3: Cross multiply
    31,500,971.40x = 47,156,978.70 × 18,714,894.60
  4. Step 4: Simplify right side
    31,500,971.40x = 882,537,886,024,945.12
  5. Step 5: Solve for x
    x = 882,537,886,024,945.12/31,500,971.40
  6. Step 6: Final answer
    x = 28,016,211.78

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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.