Home / 15,538.58-21,443.26-8,465.02

Finding the Fourth Proportional to 15,538.58, 21,443.26 and 8,465.02

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Solution

The fourth proportional to 15,538.58, 21,443.26 and 8,465.02 is: 11,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.58 : 21,443.26 = 8,465.02 : x
  2. Step 2: Convert to fraction form
    15,538.58/21,443.26 = 8,465.02/x
  3. Step 3: Cross multiply
    15,538.58x = 21,443.26 × 8,465.02
  4. Step 4: Simplify right side
    15,538.58x = 181,517,624.77
  5. Step 5: Solve for x
    x = 181,517,624.77/15,538.58
  6. Step 6: Final answer
    x = 11,681.74

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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.