Home / 15,036,818.40-20,750,828.40-8,161,300.80

Finding the Fourth Proportional to 15,036,818.40, 20,750,828.40 and 8,161,300.80

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Solution

The fourth proportional to 15,036,818.40, 20,750,828.40 and 8,161,300.80 is: 11,262,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036,818.40 : 20,750,828.40 = 8,161,300.80 : x
  2. Step 2: Convert to fraction form
    15,036,818.40/20,750,828.40 = 8,161,300.80/x
  3. Step 3: Cross multiply
    15,036,818.40x = 20,750,828.40 × 8,161,300.80
  4. Step 4: Simplify right side
    15,036,818.40x = 169,353,752,421,582.72
  5. Step 5: Solve for x
    x = 169,353,752,421,582.72/15,036,818.40
  6. Step 6: Final answer
    x = 11,262,605.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.