Home / 28,567.40-39,422.82-15,991.40

Finding the Fourth Proportional to 28,567.40, 39,422.82 and 15,991.40

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Solution

The fourth proportional to 28,567.40, 39,422.82 and 15,991.40 is: 22,068.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,567.40 : 39,422.82 = 15,991.40 : x
  2. Step 2: Convert to fraction form
    28,567.40/39,422.82 = 15,991.40/x
  3. Step 3: Cross multiply
    28,567.40x = 39,422.82 × 15,991.40
  4. Step 4: Simplify right side
    28,567.40x = 630,426,083.75
  5. Step 5: Solve for x
    x = 630,426,083.75/28,567.40
  6. Step 6: Final answer
    x = 22,068.02

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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.