Home / 21,289.32-31,939.65-17,547.93

Finding the Fourth Proportional to 21,289.32, 31,939.65 and 17,547.93

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Solution

The fourth proportional to 21,289.32, 31,939.65 and 17,547.93 is: 26,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.32 : 31,939.65 = 17,547.93 : x
  2. Step 2: Convert to fraction form
    21,289.32/31,939.65 = 17,547.93/x
  3. Step 3: Cross multiply
    21,289.32x = 31,939.65 × 17,547.93
  4. Step 4: Simplify right side
    21,289.32x = 560,474,742.42
  5. Step 5: Solve for x
    x = 560,474,742.42/21,289.32
  6. Step 6: Final answer
    x = 26,326.57

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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.