Home / 21,211.42-29,248.95-13,250.74

Finding the Fourth Proportional to 21,211.42, 29,248.95 and 13,250.74

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Solution

The fourth proportional to 21,211.42, 29,248.95 and 13,250.74 is: 18,271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.42 : 29,248.95 = 13,250.74 : x
  2. Step 2: Convert to fraction form
    21,211.42/29,248.95 = 13,250.74/x
  3. Step 3: Cross multiply
    21,211.42x = 29,248.95 × 13,250.74
  4. Step 4: Simplify right side
    21,211.42x = 387,570,231.72
  5. Step 5: Solve for x
    x = 387,570,231.72/21,211.42
  6. Step 6: Final answer
    x = 18,271.77

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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.