Home / 21,054.67-31,565.80-8,403.01

Finding the Fourth Proportional to 21,054.67, 31,565.80 and 8,403.01

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Solution

The fourth proportional to 21,054.67, 31,565.80 and 8,403.01 is: 12,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.67 : 31,565.80 = 8,403.01 : x
  2. Step 2: Convert to fraction form
    21,054.67/31,565.80 = 8,403.01/x
  3. Step 3: Cross multiply
    21,054.67x = 31,565.80 × 8,403.01
  4. Step 4: Simplify right side
    21,054.67x = 265,247,733.06
  5. Step 5: Solve for x
    x = 265,247,733.06/21,054.67
  6. Step 6: Final answer
    x = 12,598.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.