Home / 13,381,845.60-20,072,768.40-12,690,972.30

Finding the Fourth Proportional to 13,381,845.60, 20,072,768.40 and 12,690,972.30

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Solution

The fourth proportional to 13,381,845.60, 20,072,768.40 and 12,690,972.30 is: 19,036,458.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381,845.60 : 20,072,768.40 = 12,690,972.30 : x
  2. Step 2: Convert to fraction form
    13,381,845.60/20,072,768.40 = 12,690,972.30/x
  3. Step 3: Cross multiply
    13,381,845.60x = 20,072,768.40 × 12,690,972.30
  4. Step 4: Simplify right side
    13,381,845.60x = 254,742,947,748,715.31
  5. Step 5: Solve for x
    x = 254,742,947,748,715.31/13,381,845.60
  6. Step 6: Final answer
    x = 19,036,458.45

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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.