Home / 20,121,355.40-30,185,969.70-8,606,800.40

Finding the Fourth Proportional to 20,121,355.40, 30,185,969.70 and 8,606,800.40

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Solution

The fourth proportional to 20,121,355.40, 30,185,969.70 and 8,606,800.40 is: 12,911,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121,355.40 : 30,185,969.70 = 8,606,800.40 : x
  2. Step 2: Convert to fraction form
    20,121,355.40/30,185,969.70 = 8,606,800.40/x
  3. Step 3: Cross multiply
    20,121,355.40x = 30,185,969.70 × 8,606,800.40
  4. Step 4: Simplify right side
    20,121,355.40x = 259,804,616,088,347.88
  5. Step 5: Solve for x
    x = 259,804,616,088,347.88/20,121,355.40
  6. Step 6: Final answer
    x = 12,911,884.46

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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.