Home / 20,085,890.40-30,128,835.60-10,008,194.40

Finding the Fourth Proportional to 20,085,890.40, 30,128,835.60 and 10,008,194.40

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Solution

The fourth proportional to 20,085,890.40, 30,128,835.60 and 10,008,194.40 is: 15,012,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085,890.40 : 30,128,835.60 = 10,008,194.40 : x
  2. Step 2: Convert to fraction form
    20,085,890.40/30,128,835.60 = 10,008,194.40/x
  3. Step 3: Cross multiply
    20,085,890.40x = 30,128,835.60 × 10,008,194.40
  4. Step 4: Simplify right side
    20,085,890.40x = 301,535,243,730,440.69
  5. Step 5: Solve for x
    x = 301,535,243,730,440.69/20,085,890.40
  6. Step 6: Final answer
    x = 15,012,291.60

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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.