Home / 20,708,741.20-31,039,783.80-9,931,205.20

Finding the Fourth Proportional to 20,708,741.20, 31,039,783.80 and 9,931,205.20

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Solution

The fourth proportional to 20,708,741.20, 31,039,783.80 and 9,931,205.20 is: 14,885,620.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708,741.20 : 31,039,783.80 = 9,931,205.20 : x
  2. Step 2: Convert to fraction form
    20,708,741.20/31,039,783.80 = 9,931,205.20/x
  3. Step 3: Cross multiply
    20,708,741.20x = 31,039,783.80 × 9,931,205.20
  4. Step 4: Simplify right side
    20,708,741.20x = 308,262,462,281,435.75
  5. Step 5: Solve for x
    x = 308,262,462,281,435.75/20,708,741.20
  6. Step 6: Final answer
    x = 14,885,620.49

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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.