Home / 15,538.96-21,443.16-8,465.32

Finding the Fourth Proportional to 15,538.96, 21,443.16 and 8,465.32

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Solution

The fourth proportional to 15,538.96, 21,443.16 and 8,465.32 is: 11,681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.96 : 21,443.16 = 8,465.32 : x
  2. Step 2: Convert to fraction form
    15,538.96/21,443.16 = 8,465.32/x
  3. Step 3: Cross multiply
    15,538.96x = 21,443.16 × 8,465.32
  4. Step 4: Simplify right side
    15,538.96x = 181,523,211.21
  5. Step 5: Solve for x
    x = 181,523,211.21/15,538.96
  6. Step 6: Final answer
    x = 11,681.81

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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.