Home / 15,014,762.40-20,720,399.76-8,139,223.20

Finding the Fourth Proportional to 15,014,762.40, 20,720,399.76 and 8,139,223.20

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Solution

The fourth proportional to 15,014,762.40, 20,720,399.76 and 8,139,223.20 is: 11,232,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014,762.40 : 20,720,399.76 = 8,139,223.20 : x
  2. Step 2: Convert to fraction form
    15,014,762.40/20,720,399.76 = 8,139,223.20/x
  3. Step 3: Cross multiply
    15,014,762.40x = 20,720,399.76 × 8,139,223.20
  4. Step 4: Simplify right side
    15,014,762.40x = 168,647,958,439,866.44
  5. Step 5: Solve for x
    x = 168,647,958,439,866.44/15,014,762.40
  6. Step 6: Final answer
    x = 11,232,143.00

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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.