Home / 20,804,975.60-31,207,463.40-12,742,818.80

Finding the Fourth Proportional to 20,804,975.60, 31,207,463.40 and 12,742,818.80

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Solution

The fourth proportional to 20,804,975.60, 31,207,463.40 and 12,742,818.80 is: 19,114,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,975.60 : 31,207,463.40 = 12,742,818.80 : x
  2. Step 2: Convert to fraction form
    20,804,975.60/31,207,463.40 = 12,742,818.80/x
  3. Step 3: Cross multiply
    20,804,975.60x = 31,207,463.40 × 12,742,818.80
  4. Step 4: Simplify right side
    20,804,975.60x = 397,671,051,313,831.94
  5. Step 5: Solve for x
    x = 397,671,051,313,831.94/20,804,975.60
  6. Step 6: Final answer
    x = 19,114,228.20

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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.