Home / 21,681.07-29,925.45-14,146.25

Finding the Fourth Proportional to 21,681.07, 29,925.45 and 14,146.25

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Solution

The fourth proportional to 21,681.07, 29,925.45 and 14,146.25 is: 19,525.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.07 : 29,925.45 = 14,146.25 : x
  2. Step 2: Convert to fraction form
    21,681.07/29,925.45 = 14,146.25/x
  3. Step 3: Cross multiply
    21,681.07x = 29,925.45 × 14,146.25
  4. Step 4: Simplify right side
    21,681.07x = 423,332,747.44
  5. Step 5: Solve for x
    x = 423,332,747.44/21,681.07
  6. Step 6: Final answer
    x = 19,525.46

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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.