Home / 20,859,477.60-31,289,216.40-18,843,938.40

Finding the Fourth Proportional to 20,859,477.60, 31,289,216.40 and 18,843,938.40

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Solution

The fourth proportional to 20,859,477.60, 31,289,216.40 and 18,843,938.40 is: 28,265,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859,477.60 : 31,289,216.40 = 18,843,938.40 : x
  2. Step 2: Convert to fraction form
    20,859,477.60/31,289,216.40 = 18,843,938.40/x
  3. Step 3: Cross multiply
    20,859,477.60x = 31,289,216.40 × 18,843,938.40
  4. Step 4: Simplify right side
    20,859,477.60x = 589,612,066,425,869.62
  5. Step 5: Solve for x
    x = 589,612,066,425,869.62/20,859,477.60
  6. Step 6: Final answer
    x = 28,265,907.60

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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.