Home / 28,331.32-39,095.19-15,585.40

Finding the Fourth Proportional to 28,331.32, 39,095.19 and 15,585.40

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Solution

The fourth proportional to 28,331.32, 39,095.19 and 15,585.40 is: 21,506.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.32 : 39,095.19 = 15,585.40 : x
  2. Step 2: Convert to fraction form
    28,331.32/39,095.19 = 15,585.40/x
  3. Step 3: Cross multiply
    28,331.32x = 39,095.19 × 15,585.40
  4. Step 4: Simplify right side
    28,331.32x = 609,314,174.23
  5. Step 5: Solve for x
    x = 609,314,174.23/28,331.32
  6. Step 6: Final answer
    x = 21,506.73

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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.