Home / 13,435,040.80-20,152,561.20-12,912,493.60

Finding the Fourth Proportional to 13,435,040.80, 20,152,561.20 and 12,912,493.60

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Solution

The fourth proportional to 13,435,040.80, 20,152,561.20 and 12,912,493.60 is: 19,368,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435,040.80 : 20,152,561.20 = 12,912,493.60 : x
  2. Step 2: Convert to fraction form
    13,435,040.80/20,152,561.20 = 12,912,493.60/x
  3. Step 3: Cross multiply
    13,435,040.80x = 20,152,561.20 × 12,912,493.60
  4. Step 4: Simplify right side
    13,435,040.80x = 260,219,817,518,608.31
  5. Step 5: Solve for x
    x = 260,219,817,518,608.31/13,435,040.80
  6. Step 6: Final answer
    x = 19,368,740.40

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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.