Home / 19,827.72-27,372.60-15,581.52

Finding the Fourth Proportional to 19,827.72, 27,372.60 and 15,581.52

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Solution

The fourth proportional to 19,827.72, 27,372.60 and 15,581.52 is: 21,510.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,827.72 : 27,372.60 = 15,581.52 : x
  2. Step 2: Convert to fraction form
    19,827.72/27,372.60 = 15,581.52/x
  3. Step 3: Cross multiply
    19,827.72x = 27,372.60 × 15,581.52
  4. Step 4: Simplify right side
    19,827.72x = 426,506,714.35
  5. Step 5: Solve for x
    x = 426,506,714.35/19,827.72
  6. Step 6: Final answer
    x = 21,510.63

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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.