Home / 12,210,009.30-18,315,013.95-11,513,279.70

Finding the Fourth Proportional to 12,210,009.30, 18,315,013.95 and 11,513,279.70

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Solution

The fourth proportional to 12,210,009.30, 18,315,013.95 and 11,513,279.70 is: 17,269,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210,009.30 : 18,315,013.95 = 11,513,279.70 : x
  2. Step 2: Convert to fraction form
    12,210,009.30/18,315,013.95 = 11,513,279.70/x
  3. Step 3: Cross multiply
    12,210,009.30x = 18,315,013.95 × 11,513,279.70
  4. Step 4: Simplify right side
    12,210,009.30x = 210,865,878,315,751.78
  5. Step 5: Solve for x
    x = 210,865,878,315,751.78/12,210,009.30
  6. Step 6: Final answer
    x = 17,269,919.55

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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.