Home / 15,003,760.96-20,705,075.68-8,128,193.84

Finding the Fourth Proportional to 15,003,760.96, 20,705,075.68 and 8,128,193.84

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Solution

The fourth proportional to 15,003,760.96, 20,705,075.68 and 8,128,193.84 is: 11,216,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003,760.96 : 20,705,075.68 = 8,128,193.84 : x
  2. Step 2: Convert to fraction form
    15,003,760.96/20,705,075.68 = 8,128,193.84/x
  3. Step 3: Cross multiply
    15,003,760.96x = 20,705,075.68 × 8,128,193.84
  4. Step 4: Simplify right side
    15,003,760.96x = 168,294,868,598,909.81
  5. Step 5: Solve for x
    x = 168,294,868,598,909.81/15,003,760.96
  6. Step 6: Final answer
    x = 11,216,845.50

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1.5x scale

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.