Home / 21,498.91-29,668.49-12,070.51

Finding the Fourth Proportional to 21,498.91, 29,668.49 and 12,070.51

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Solution

The fourth proportional to 21,498.91, 29,668.49 and 12,070.51 is: 16,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,498.91 : 29,668.49 = 12,070.51 : x
  2. Step 2: Convert to fraction form
    21,498.91/29,668.49 = 12,070.51/x
  3. Step 3: Cross multiply
    21,498.91x = 29,668.49 × 12,070.51
  4. Step 4: Simplify right side
    21,498.91x = 358,113,805.23
  5. Step 5: Solve for x
    x = 358,113,805.23/21,498.91
  6. Step 6: Final answer
    x = 16,657.30

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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.