Home / 28,507.56-39,342.81-18,930.52

Finding the Fourth Proportional to 28,507.56, 39,342.81 and 18,930.52

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Solution

The fourth proportional to 28,507.56, 39,342.81 and 18,930.52 is: 26,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.56 : 39,342.81 = 18,930.52 : x
  2. Step 2: Convert to fraction form
    28,507.56/39,342.81 = 18,930.52/x
  3. Step 3: Cross multiply
    28,507.56x = 39,342.81 × 18,930.52
  4. Step 4: Simplify right side
    28,507.56x = 744,779,851.56
  5. Step 5: Solve for x
    x = 744,779,851.56/28,507.56
  6. Step 6: Final answer
    x = 26,125.70

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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.