Home / 20,952,139.20-31,428,208.80-8,835,284.40

Finding the Fourth Proportional to 20,952,139.20, 31,428,208.80 and 8,835,284.40

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Solution

The fourth proportional to 20,952,139.20, 31,428,208.80 and 8,835,284.40 is: 13,252,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952,139.20 : 31,428,208.80 = 8,835,284.40 : x
  2. Step 2: Convert to fraction form
    20,952,139.20/31,428,208.80 = 8,835,284.40/x
  3. Step 3: Cross multiply
    20,952,139.20x = 31,428,208.80 × 8,835,284.40
  4. Step 4: Simplify right side
    20,952,139.20x = 277,677,162,930,582.75
  5. Step 5: Solve for x
    x = 277,677,162,930,582.75/20,952,139.20
  6. Step 6: Final answer
    x = 13,252,926.60

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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.