Home / 21,047.23-29,045.45-12,433.70

Finding the Fourth Proportional to 21,047.23, 29,045.45 and 12,433.70

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Solution

The fourth proportional to 21,047.23, 29,045.45 and 12,433.70 is: 17,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.23 : 29,045.45 = 12,433.70 : x
  2. Step 2: Convert to fraction form
    21,047.23/29,045.45 = 12,433.70/x
  3. Step 3: Cross multiply
    21,047.23x = 29,045.45 × 12,433.70
  4. Step 4: Simplify right side
    21,047.23x = 361,142,359.82
  5. Step 5: Solve for x
    x = 361,142,359.82/21,047.23
  6. Step 6: Final answer
    x = 17,158.66

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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.