Home / 21,484.79-29,642.27-12,409.00

Finding the Fourth Proportional to 21,484.79, 29,642.27 and 12,409.00

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Solution

The fourth proportional to 21,484.79, 29,642.27 and 12,409.00 is: 17,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,484.79 : 29,642.27 = 12,409.00 : x
  2. Step 2: Convert to fraction form
    21,484.79/29,642.27 = 12,409.00/x
  3. Step 3: Cross multiply
    21,484.79x = 29,642.27 × 12,409.00
  4. Step 4: Simplify right side
    21,484.79x = 367,830,862.08
  5. Step 5: Solve for x
    x = 367,830,862.08/21,484.79
  6. Step 6: Final answer
    x = 17,120.52

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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.