Home / 13,686,746.20-18,886,430.10-8,179,028.12

Finding the Fourth Proportional to 13,686,746.20, 18,886,430.10 and 8,179,028.12

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Solution

The fourth proportional to 13,686,746.20, 18,886,430.10 and 8,179,028.12 is: 11,286,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686,746.20 : 18,886,430.10 = 8,179,028.12 : x
  2. Step 2: Convert to fraction form
    13,686,746.20/18,886,430.10 = 8,179,028.12/x
  3. Step 3: Cross multiply
    13,686,746.20x = 18,886,430.10 × 8,179,028.12
  4. Step 4: Simplify right side
    13,686,746.20x = 154,472,642,874,314.44
  5. Step 5: Solve for x
    x = 154,472,642,874,314.44/13,686,746.20
  6. Step 6: Final answer
    x = 11,286,294.10

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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.