Home / 20,697,597.12-28,355,809.40-19,921,853.28

Finding the Fourth Proportional to 20,697,597.12, 28,355,809.40 and 19,921,853.28

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Solution

The fourth proportional to 20,697,597.12, 28,355,809.40 and 19,921,853.28 is: 27,293,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697,597.12 : 28,355,809.40 = 19,921,853.28 : x
  2. Step 2: Convert to fraction form
    20,697,597.12/28,355,809.40 = 19,921,853.28/x
  3. Step 3: Cross multiply
    20,697,597.12x = 28,355,809.40 × 19,921,853.28
  4. Step 4: Simplify right side
    20,697,597.12x = 564,900,274,502,444.88
  5. Step 5: Solve for x
    x = 564,900,274,502,444.88/20,697,597.12
  6. Step 6: Final answer
    x = 27,293,036.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.