Home / 20,736,007.60-31,104,011.40-10,639,649.20

Finding the Fourth Proportional to 20,736,007.60, 31,104,011.40 and 10,639,649.20

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Solution

The fourth proportional to 20,736,007.60, 31,104,011.40 and 10,639,649.20 is: 15,959,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,007.60 : 31,104,011.40 = 10,639,649.20 : x
  2. Step 2: Convert to fraction form
    20,736,007.60/31,104,011.40 = 10,639,649.20/x
  3. Step 3: Cross multiply
    20,736,007.60x = 31,104,011.40 × 10,639,649.20
  4. Step 4: Simplify right side
    20,736,007.60x = 330,935,770,008,800.81
  5. Step 5: Solve for x
    x = 330,935,770,008,800.81/20,736,007.60
  6. Step 6: Final answer
    x = 15,959,473.80

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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.