Home / 21,924.36-30,256.68-12,977.08

Finding the Fourth Proportional to 21,924.36, 30,256.68 and 12,977.08

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Solution

The fourth proportional to 21,924.36, 30,256.68 and 12,977.08 is: 17,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.36 : 30,256.68 = 12,977.08 : x
  2. Step 2: Convert to fraction form
    21,924.36/30,256.68 = 12,977.08/x
  3. Step 3: Cross multiply
    21,924.36x = 30,256.68 × 12,977.08
  4. Step 4: Simplify right side
    21,924.36x = 392,643,356.89
  5. Step 5: Solve for x
    x = 392,643,356.89/21,924.36
  6. Step 6: Final answer
    x = 17,909.00

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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.