Home / 12,547,139.80-18,820,709.70-12,452,661.40

Finding the Fourth Proportional to 12,547,139.80, 18,820,709.70 and 12,452,661.40

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Solution

The fourth proportional to 12,547,139.80, 18,820,709.70 and 12,452,661.40 is: 18,678,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547,139.80 : 18,820,709.70 = 12,452,661.40 : x
  2. Step 2: Convert to fraction form
    12,547,139.80/18,820,709.70 = 12,452,661.40/x
  3. Step 3: Cross multiply
    12,547,139.80x = 18,820,709.70 × 12,452,661.40
  4. Step 4: Simplify right side
    12,547,139.80x = 234,367,925,201,795.56
  5. Step 5: Solve for x
    x = 234,367,925,201,795.56/12,547,139.80
  6. Step 6: Final answer
    x = 18,678,992.10

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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.