Home / 28,243,929.80-42,369,831.30-12,069,752.60

Finding the Fourth Proportional to 28,243,929.80, 42,369,831.30 and 12,069,752.60

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Solution

The fourth proportional to 28,243,929.80, 42,369,831.30 and 12,069,752.60 is: 18,106,311.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243,929.80 : 42,369,831.30 = 12,069,752.60 : x
  2. Step 2: Convert to fraction form
    28,243,929.80/42,369,831.30 = 12,069,752.60/x
  3. Step 3: Cross multiply
    28,243,929.80x = 42,369,831.30 × 12,069,752.60
  4. Step 4: Simplify right side
    28,243,929.80x = 511,393,381,494,736.31
  5. Step 5: Solve for x
    x = 511,393,381,494,736.31/28,243,929.80
  6. Step 6: Final answer
    x = 18,106,311.17

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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.