Home / 28,397.96-39,188.67-15,477.35

Finding the Fourth Proportional to 28,397.96, 39,188.67 and 15,477.35

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Solution

The fourth proportional to 28,397.96, 39,188.67 and 15,477.35 is: 21,358.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.96 : 39,188.67 = 15,477.35 : x
  2. Step 2: Convert to fraction form
    28,397.96/39,188.67 = 15,477.35/x
  3. Step 3: Cross multiply
    28,397.96x = 39,188.67 × 15,477.35
  4. Step 4: Simplify right side
    28,397.96x = 606,536,565.68
  5. Step 5: Solve for x
    x = 606,536,565.68/28,397.96
  6. Step 6: Final answer
    x = 21,358.46

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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.