Home / 13,238,116.45-18,268,176.88-7,357,721.78

Finding the Fourth Proportional to 13,238,116.45, 18,268,176.88 and 7,357,721.78

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Solution

The fourth proportional to 13,238,116.45, 18,268,176.88 and 7,357,721.78 is: 10,153,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238,116.45 : 18,268,176.88 = 7,357,721.78 : x
  2. Step 2: Convert to fraction form
    13,238,116.45/18,268,176.88 = 7,357,721.78/x
  3. Step 3: Cross multiply
    13,238,116.45x = 18,268,176.88 × 7,357,721.78
  4. Step 4: Simplify right side
    13,238,116.45x = 134,412,162,965,736.05
  5. Step 5: Solve for x
    x = 134,412,162,965,736.05/13,238,116.45
  6. Step 6: Final answer
    x = 10,153,420.50

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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.