Home / 18,928,470.40-28,392,705.60-13,553,699.20

Finding the Fourth Proportional to 18,928,470.40, 28,392,705.60 and 13,553,699.20

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Solution

The fourth proportional to 18,928,470.40, 28,392,705.60 and 13,553,699.20 is: 20,330,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,470.40 : 28,392,705.60 = 13,553,699.20 : x
  2. Step 2: Convert to fraction form
    18,928,470.40/28,392,705.60 = 13,553,699.20/x
  3. Step 3: Cross multiply
    18,928,470.40x = 28,392,705.60 × 13,553,699.20
  4. Step 4: Simplify right side
    18,928,470.40x = 384,826,191,176,555.50
  5. Step 5: Solve for x
    x = 384,826,191,176,555.50/18,928,470.40
  6. Step 6: Final answer
    x = 20,330,548.80

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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.