Home / 28,835.72-39,782.52-19,389.32

Finding the Fourth Proportional to 28,835.72, 39,782.52 and 19,389.32

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Solution

The fourth proportional to 28,835.72, 39,782.52 and 19,389.32 is: 26,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,835.72 : 39,782.52 = 19,389.32 : x
  2. Step 2: Convert to fraction form
    28,835.72/39,782.52 = 19,389.32/x
  3. Step 3: Cross multiply
    28,835.72x = 39,782.52 × 19,389.32
  4. Step 4: Simplify right side
    28,835.72x = 771,356,010.69
  5. Step 5: Solve for x
    x = 771,356,010.69/28,835.72
  6. Step 6: Final answer
    x = 26,750.02

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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.