Home / 18,928,692.40-28,393,038.60-13,553,921.20

Finding the Fourth Proportional to 18,928,692.40, 28,393,038.60 and 13,553,921.20

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Solution

The fourth proportional to 18,928,692.40, 28,393,038.60 and 13,553,921.20 is: 20,330,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,692.40 : 28,393,038.60 = 13,553,921.20 : x
  2. Step 2: Convert to fraction form
    18,928,692.40/28,393,038.60 = 13,553,921.20/x
  3. Step 3: Cross multiply
    18,928,692.40x = 28,393,038.60 × 13,553,921.20
  4. Step 4: Simplify right side
    18,928,692.40x = 384,837,007,812,958.31
  5. Step 5: Solve for x
    x = 384,837,007,812,958.31/18,928,692.40
  6. Step 6: Final answer
    x = 20,330,881.80

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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.