Home / 31,515-43,492.85-19,255.66

Finding the Fourth Proportional to 31,515, 43,492.85 and 19,255.66

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Solution

The fourth proportional to 31,515, 43,492.85 and 19,255.66 is: 26,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515 : 43,492.85 = 19,255.66 : x
  2. Step 2: Convert to fraction form
    31,515/43,492.85 = 19,255.66/x
  3. Step 3: Cross multiply
    31,515x = 43,492.85 × 19,255.66
  4. Step 4: Simplify right side
    31,515x = 837,483,314.57
  5. Step 5: Solve for x
    x = 837,483,314.57/31,515
  6. Step 6: Final answer
    x = 26,574.12

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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.