Home / 28,058.44-38,720.67-15,311.65

Finding the Fourth Proportional to 28,058.44, 38,720.67 and 15,311.65

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Solution

The fourth proportional to 28,058.44, 38,720.67 and 15,311.65 is: 21,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,058.44 : 38,720.67 = 15,311.65 : x
  2. Step 2: Convert to fraction form
    28,058.44/38,720.67 = 15,311.65/x
  3. Step 3: Cross multiply
    28,058.44x = 38,720.67 × 15,311.65
  4. Step 4: Simplify right side
    28,058.44x = 592,877,346.81
  5. Step 5: Solve for x
    x = 592,877,346.81/28,058.44
  6. Step 6: Final answer
    x = 21,130.09

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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.