Home / 23,145.40-31,945.08-13,587.40

Finding the Fourth Proportional to 23,145.40, 31,945.08 and 13,587.40

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Solution

The fourth proportional to 23,145.40, 31,945.08 and 13,587.40 is: 18,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,145.40 : 31,945.08 = 13,587.40 : x
  2. Step 2: Convert to fraction form
    23,145.40/31,945.08 = 13,587.40/x
  3. Step 3: Cross multiply
    23,145.40x = 31,945.08 × 13,587.40
  4. Step 4: Simplify right side
    23,145.40x = 434,050,579.99
  5. Step 5: Solve for x
    x = 434,050,579.99/23,145.40
  6. Step 6: Final answer
    x = 18,753.21

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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.