Home / 15,528.59-21,429.44-8,455.01

Finding the Fourth Proportional to 15,528.59, 21,429.44 and 8,455.01

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Solution

The fourth proportional to 15,528.59, 21,429.44 and 8,455.01 is: 11,667.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.59 : 21,429.44 = 8,455.01 : x
  2. Step 2: Convert to fraction form
    15,528.59/21,429.44 = 8,455.01/x
  3. Step 3: Cross multiply
    15,528.59x = 21,429.44 × 8,455.01
  4. Step 4: Simplify right side
    15,528.59x = 181,186,129.49
  5. Step 5: Solve for x
    x = 181,186,129.49/15,528.59
  6. Step 6: Final answer
    x = 11,667.91

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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.