Home / 19,779.99-27,301.31-13,417.23

Finding the Fourth Proportional to 19,779.99, 27,301.31 and 13,417.23

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Solution

The fourth proportional to 19,779.99, 27,301.31 and 13,417.23 is: 18,519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.99 : 27,301.31 = 13,417.23 : x
  2. Step 2: Convert to fraction form
    19,779.99/27,301.31 = 13,417.23/x
  3. Step 3: Cross multiply
    19,779.99x = 27,301.31 × 13,417.23
  4. Step 4: Simplify right side
    19,779.99x = 366,307,888.49
  5. Step 5: Solve for x
    x = 366,307,888.49/19,779.99
  6. Step 6: Final answer
    x = 18,519.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.