Home / 28,987.26-39,980.65-19,437.96

Finding the Fourth Proportional to 28,987.26, 39,980.65 and 19,437.96

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Solution

The fourth proportional to 28,987.26, 39,980.65 and 19,437.96 is: 26,809.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.26 : 39,980.65 = 19,437.96 : x
  2. Step 2: Convert to fraction form
    28,987.26/39,980.65 = 19,437.96/x
  3. Step 3: Cross multiply
    28,987.26x = 39,980.65 × 19,437.96
  4. Step 4: Simplify right side
    28,987.26x = 777,142,275.47
  5. Step 5: Solve for x
    x = 777,142,275.47/28,987.26
  6. Step 6: Final answer
    x = 26,809.79

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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.