Home / 21,643.56-29,883.78-14,213.16

Finding the Fourth Proportional to 21,643.56, 29,883.78 and 14,213.16

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Solution

The fourth proportional to 21,643.56, 29,883.78 and 14,213.16 is: 19,624.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.56 : 29,883.78 = 14,213.16 : x
  2. Step 2: Convert to fraction form
    21,643.56/29,883.78 = 14,213.16/x
  3. Step 3: Cross multiply
    21,643.56x = 29,883.78 × 14,213.16
  4. Step 4: Simplify right side
    21,643.56x = 424,742,946.54
  5. Step 5: Solve for x
    x = 424,742,946.54/21,643.56
  6. Step 6: Final answer
    x = 19,624.45

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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.