Home / 13,088.52-19,720.13-11,840.58

Finding the Fourth Proportional to 13,088.52, 19,720.13 and 11,840.58

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Solution

The fourth proportional to 13,088.52, 19,720.13 and 11,840.58 is: 17,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.52 : 19,720.13 = 11,840.58 : x
  2. Step 2: Convert to fraction form
    13,088.52/19,720.13 = 11,840.58/x
  3. Step 3: Cross multiply
    13,088.52x = 19,720.13 × 11,840.58
  4. Step 4: Simplify right side
    13,088.52x = 233,497,717.67
  5. Step 5: Solve for x
    x = 233,497,717.67/13,088.52
  6. Step 6: Final answer
    x = 17,839.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.