Home / 20,142,304.20-30,222,385.74-10,555,403.40

Finding the Fourth Proportional to 20,142,304.20, 30,222,385.74 and 10,555,403.40

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Solution

The fourth proportional to 20,142,304.20, 30,222,385.74 and 10,555,403.40 is: 15,837,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,304.20 : 30,222,385.74 = 10,555,403.40 : x
  2. Step 2: Convert to fraction form
    20,142,304.20/30,222,385.74 = 10,555,403.40/x
  3. Step 3: Cross multiply
    20,142,304.20x = 30,222,385.74 × 10,555,403.40
  4. Step 4: Simplify right side
    20,142,304.20x = 319,009,473,196,107.50
  5. Step 5: Solve for x
    x = 319,009,473,196,107.50/20,142,304.20
  6. Step 6: Final answer
    x = 15,837,784.50

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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.