Home / 12,312,091.80-18,468,137.70-7,210,258.20

Finding the Fourth Proportional to 12,312,091.80, 18,468,137.70 and 7,210,258.20

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Solution

The fourth proportional to 12,312,091.80, 18,468,137.70 and 7,210,258.20 is: 10,815,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,091.80 : 18,468,137.70 = 7,210,258.20 : x
  2. Step 2: Convert to fraction form
    12,312,091.80/18,468,137.70 = 7,210,258.20/x
  3. Step 3: Cross multiply
    12,312,091.80x = 18,468,137.70 × 7,210,258.20
  4. Step 4: Simplify right side
    12,312,091.80x = 133,160,041,290,154.14
  5. Step 5: Solve for x
    x = 133,160,041,290,154.14/12,312,091.80
  6. Step 6: Final answer
    x = 10,815,387.30

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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.