Home / 13,122,079.70-19,683,119.55-12,643,782.80

Finding the Fourth Proportional to 13,122,079.70, 19,683,119.55 and 12,643,782.80

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Solution

The fourth proportional to 13,122,079.70, 19,683,119.55 and 12,643,782.80 is: 18,965,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,079.70 : 19,683,119.55 = 12,643,782.80 : x
  2. Step 2: Convert to fraction form
    13,122,079.70/19,683,119.55 = 12,643,782.80/x
  3. Step 3: Cross multiply
    13,122,079.70x = 19,683,119.55 × 12,643,782.80
  4. Step 4: Simplify right side
    13,122,079.70x = 248,869,088,416,633.75
  5. Step 5: Solve for x
    x = 248,869,088,416,633.75/13,122,079.70
  6. Step 6: Final answer
    x = 18,965,674.20

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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.