Home / 21,030.64-31,482.93-20,282.93

Finding the Fourth Proportional to 21,030.64, 31,482.93 and 20,282.93

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Solution

The fourth proportional to 21,030.64, 31,482.93 and 20,282.93 is: 30,363.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.64 : 31,482.93 = 20,282.93 : x
  2. Step 2: Convert to fraction form
    21,030.64/31,482.93 = 20,282.93/x
  3. Step 3: Cross multiply
    21,030.64x = 31,482.93 × 20,282.93
  4. Step 4: Simplify right side
    21,030.64x = 638,566,065.38
  5. Step 5: Solve for x
    x = 638,566,065.38/21,030.64
  6. Step 6: Final answer
    x = 30,363.61

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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.