Home / 13,528.89-18,670.58-8,153.01

Finding the Fourth Proportional to 13,528.89, 18,670.58 and 8,153.01

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Solution

The fourth proportional to 13,528.89, 18,670.58 and 8,153.01 is: 11,251.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.89 : 18,670.58 = 8,153.01 : x
  2. Step 2: Convert to fraction form
    13,528.89/18,670.58 = 8,153.01/x
  3. Step 3: Cross multiply
    13,528.89x = 18,670.58 × 8,153.01
  4. Step 4: Simplify right side
    13,528.89x = 152,221,384.68
  5. Step 5: Solve for x
    x = 152,221,384.68/13,528.89
  6. Step 6: Final answer
    x = 11,251.58

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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.