Home / 21,051.74-29,038.65-12,548.20

Finding the Fourth Proportional to 21,051.74, 29,038.65 and 12,548.20

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Solution

The fourth proportional to 21,051.74, 29,038.65 and 12,548.20 is: 17,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.74 : 29,038.65 = 12,548.20 : x
  2. Step 2: Convert to fraction form
    21,051.74/29,038.65 = 12,548.20/x
  3. Step 3: Cross multiply
    21,051.74x = 29,038.65 × 12,548.20
  4. Step 4: Simplify right side
    21,051.74x = 364,382,642.74
  5. Step 5: Solve for x
    x = 364,382,642.74/21,051.74
  6. Step 6: Final answer
    x = 17,308.91

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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.