Home / 19,667.95-27,176.30-15,721.63

Finding the Fourth Proportional to 19,667.95, 27,176.30 and 15,721.63

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Solution

The fourth proportional to 19,667.95, 27,176.30 and 15,721.63 is: 21,723.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,667.95 : 27,176.30 = 15,721.63 : x
  2. Step 2: Convert to fraction form
    19,667.95/27,176.30 = 15,721.63/x
  3. Step 3: Cross multiply
    19,667.95x = 27,176.30 × 15,721.63
  4. Step 4: Simplify right side
    19,667.95x = 427,255,654.76
  5. Step 5: Solve for x
    x = 427,255,654.76/19,667.95
  6. Step 6: Final answer
    x = 21,723.45

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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.