Home / 20,149,312.80-30,223,969.20-11,079,386.40

Finding the Fourth Proportional to 20,149,312.80, 30,223,969.20 and 11,079,386.40

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Solution

The fourth proportional to 20,149,312.80, 30,223,969.20 and 11,079,386.40 is: 16,619,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149,312.80 : 30,223,969.20 = 11,079,386.40 : x
  2. Step 2: Convert to fraction form
    20,149,312.80/30,223,969.20 = 11,079,386.40/x
  3. Step 3: Cross multiply
    20,149,312.80x = 30,223,969.20 × 11,079,386.40
  4. Step 4: Simplify right side
    20,149,312.80x = 334,863,033,308,498.88
  5. Step 5: Solve for x
    x = 334,863,033,308,498.88/20,149,312.80
  6. Step 6: Final answer
    x = 16,619,079.60

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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.