Home / 21,312.29-31,977.65-11,440.04

Finding the Fourth Proportional to 21,312.29, 31,977.65 and 11,440.04

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Solution

The fourth proportional to 21,312.29, 31,977.65 and 11,440.04 is: 17,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.29 : 31,977.65 = 11,440.04 : x
  2. Step 2: Convert to fraction form
    21,312.29/31,977.65 = 11,440.04/x
  3. Step 3: Cross multiply
    21,312.29x = 31,977.65 × 11,440.04
  4. Step 4: Simplify right side
    21,312.29x = 365,825,703.65
  5. Step 5: Solve for x
    x = 365,825,703.65/21,312.29
  6. Step 6: Final answer
    x = 17,165.01

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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.