Home / 21,572.34-29,777.95-12,622.72

Finding the Fourth Proportional to 21,572.34, 29,777.95 and 12,622.72

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Solution

The fourth proportional to 21,572.34, 29,777.95 and 12,622.72 is: 17,424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.34 : 29,777.95 = 12,622.72 : x
  2. Step 2: Convert to fraction form
    21,572.34/29,777.95 = 12,622.72/x
  3. Step 3: Cross multiply
    21,572.34x = 29,777.95 × 12,622.72
  4. Step 4: Simplify right side
    21,572.34x = 375,878,799.47
  5. Step 5: Solve for x
    x = 375,878,799.47/21,572.34
  6. Step 6: Final answer
    x = 17,424.11

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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.