Home / 20,518,040.80-28,314,683.40-11,225,523.04

Finding the Fourth Proportional to 20,518,040.80, 28,314,683.40 and 11,225,523.04

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Solution

The fourth proportional to 20,518,040.80, 28,314,683.40 and 11,225,523.04 is: 15,491,105.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518,040.80 : 28,314,683.40 = 11,225,523.04 : x
  2. Step 2: Convert to fraction form
    20,518,040.80/28,314,683.40 = 11,225,523.04/x
  3. Step 3: Cross multiply
    20,518,040.80x = 28,314,683.40 × 11,225,523.04
  4. Step 4: Simplify right side
    20,518,040.80x = 317,847,130,877,005.50
  5. Step 5: Solve for x
    x = 317,847,130,877,005.50/20,518,040.80
  6. Step 6: Final answer
    x = 15,491,105.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.