Home / 20,971,313,290.40-31,456,754,482.80-12,122,521,705.76

Finding the Fourth Proportional to 20,971,313,290.40, 31,456,754,482.80 and 12,122,521,705.76

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Solution

The fourth proportional to 20,971,313,290.40, 31,456,754,482.80 and 12,122,521,705.76 is: 18,183,658,015.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,313,290.40 : 31,456,754,482.80 = 12,122,521,705.76 : x
  2. Step 2: Convert to fraction form
    20,971,313,290.40/31,456,754,482.80 = 12,122,521,705.76/x
  3. Step 3: Cross multiply
    20,971,313,290.40x = 31,456,754,482.80 × 12,122,521,705.76
  4. Step 4: Simplify right side
    20,971,313,290.40x = 381,335,189,010,506,186,752
  5. Step 5: Solve for x
    x = 381,335,189,010,506,186,752/20,971,313,290.40
  6. Step 6: Final answer
    x = 18,183,658,015.59

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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.