Home / 21,168,086.40-31,752,129.60-20,538,230.40

Finding the Fourth Proportional to 21,168,086.40, 31,752,129.60 and 20,538,230.40

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Solution

The fourth proportional to 21,168,086.40, 31,752,129.60 and 20,538,230.40 is: 30,807,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168,086.40 : 31,752,129.60 = 20,538,230.40 : x
  2. Step 2: Convert to fraction form
    21,168,086.40/31,752,129.60 = 20,538,230.40/x
  3. Step 3: Cross multiply
    21,168,086.40x = 31,752,129.60 × 20,538,230.40
  4. Step 4: Simplify right side
    21,168,086.40x = 652,132,553,415,459.88
  5. Step 5: Solve for x
    x = 652,132,553,415,459.88/21,168,086.40
  6. Step 6: Final answer
    x = 30,807,345.60

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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.