Home / 21,022,093.80-31,533,140.70-12,377,320.20

Finding the Fourth Proportional to 21,022,093.80, 31,533,140.70 and 12,377,320.20

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Solution

The fourth proportional to 21,022,093.80, 31,533,140.70 and 12,377,320.20 is: 18,565,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,093.80 : 31,533,140.70 = 12,377,320.20 : x
  2. Step 2: Convert to fraction form
    21,022,093.80/31,533,140.70 = 12,377,320.20/x
  3. Step 3: Cross multiply
    21,022,093.80x = 31,533,140.70 × 12,377,320.20
  4. Step 4: Simplify right side
    21,022,093.80x = 390,295,779,355,552.12
  5. Step 5: Solve for x
    x = 390,295,779,355,552.12/21,022,093.80
  6. Step 6: Final answer
    x = 18,565,980.30

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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.