Home / 21,001.40-31,477.06-14,641.89

Finding the Fourth Proportional to 21,001.40, 31,477.06 and 14,641.89

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Solution

The fourth proportional to 21,001.40, 31,477.06 and 14,641.89 is: 21,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.40 : 31,477.06 = 14,641.89 : x
  2. Step 2: Convert to fraction form
    21,001.40/31,477.06 = 14,641.89/x
  3. Step 3: Cross multiply
    21,001.40x = 31,477.06 × 14,641.89
  4. Step 4: Simplify right side
    21,001.40x = 460,883,467.95
  5. Step 5: Solve for x
    x = 460,883,467.95/21,001.40
  6. Step 6: Final answer
    x = 21,945.37

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1.5x scale

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.