Home / 21,439.04-29,585.80-12,364.35

Finding the Fourth Proportional to 21,439.04, 29,585.80 and 12,364.35

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Solution

The fourth proportional to 21,439.04, 29,585.80 and 12,364.35 is: 17,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.04 : 29,585.80 = 12,364.35 : x
  2. Step 2: Convert to fraction form
    21,439.04/29,585.80 = 12,364.35/x
  3. Step 3: Cross multiply
    21,439.04x = 29,585.80 × 12,364.35
  4. Step 4: Simplify right side
    21,439.04x = 365,809,186.23
  5. Step 5: Solve for x
    x = 365,809,186.23/21,439.04
  6. Step 6: Final answer
    x = 17,062.76

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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.