Home / 20,776,005.20-31,164,007.80-20,477,406.80

Finding the Fourth Proportional to 20,776,005.20, 31,164,007.80 and 20,477,406.80

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Solution

The fourth proportional to 20,776,005.20, 31,164,007.80 and 20,477,406.80 is: 30,716,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,005.20 : 31,164,007.80 = 20,477,406.80 : x
  2. Step 2: Convert to fraction form
    20,776,005.20/31,164,007.80 = 20,477,406.80/x
  3. Step 3: Cross multiply
    20,776,005.20x = 31,164,007.80 × 20,477,406.80
  4. Step 4: Simplify right side
    20,776,005.20x = 638,158,065,238,973.12
  5. Step 5: Solve for x
    x = 638,158,065,238,973.12/20,776,005.20
  6. Step 6: Final answer
    x = 30,716,110.20

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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.