Home / 20,743,153.80-31,114,730.70-18,688,248.60

Finding the Fourth Proportional to 20,743,153.80, 31,114,730.70 and 18,688,248.60

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Solution

The fourth proportional to 20,743,153.80, 31,114,730.70 and 18,688,248.60 is: 28,032,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743,153.80 : 31,114,730.70 = 18,688,248.60 : x
  2. Step 2: Convert to fraction form
    20,743,153.80/31,114,730.70 = 18,688,248.60/x
  3. Step 3: Cross multiply
    20,743,153.80x = 31,114,730.70 × 18,688,248.60
  4. Step 4: Simplify right side
    20,743,153.80x = 581,479,822,443,652
  5. Step 5: Solve for x
    x = 581,479,822,443,652/20,743,153.80
  6. Step 6: Final answer
    x = 28,032,372.90

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1.5x scale

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.