Home / 19,779.72-27,271.47-13,054.68

Finding the Fourth Proportional to 19,779.72, 27,271.47 and 13,054.68

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Solution

The fourth proportional to 19,779.72, 27,271.47 and 13,054.68 is: 17,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.72 : 27,271.47 = 13,054.68 : x
  2. Step 2: Convert to fraction form
    19,779.72/27,271.47 = 13,054.68/x
  3. Step 3: Cross multiply
    19,779.72x = 27,271.47 × 13,054.68
  4. Step 4: Simplify right side
    19,779.72x = 356,020,313.98
  5. Step 5: Solve for x
    x = 356,020,313.98/19,779.72
  6. Step 6: Final answer
    x = 17,999.26

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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.