Home / 15,781.53-23,667.59-13,001.31

Finding the Fourth Proportional to 15,781.53, 23,667.59 and 13,001.31

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Solution

The fourth proportional to 15,781.53, 23,667.59 and 13,001.31 is: 19,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.53 : 23,667.59 = 13,001.31 : x
  2. Step 2: Convert to fraction form
    15,781.53/23,667.59 = 13,001.31/x
  3. Step 3: Cross multiply
    15,781.53x = 23,667.59 × 13,001.31
  4. Step 4: Simplify right side
    15,781.53x = 307,709,707.05
  5. Step 5: Solve for x
    x = 307,709,707.05/15,781.53
  6. Step 6: Final answer
    x = 19,498.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.