Home / 21,001.17-28,981.59-12,048.29

Finding the Fourth Proportional to 21,001.17, 28,981.59 and 12,048.29

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Solution

The fourth proportional to 21,001.17, 28,981.59 and 12,048.29 is: 16,626.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.17 : 28,981.59 = 12,048.29 : x
  2. Step 2: Convert to fraction form
    21,001.17/28,981.59 = 12,048.29/x
  3. Step 3: Cross multiply
    21,001.17x = 28,981.59 × 12,048.29
  4. Step 4: Simplify right side
    21,001.17x = 349,178,456.07
  5. Step 5: Solve for x
    x = 349,178,456.07/21,001.17
  6. Step 6: Final answer
    x = 16,626.62

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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.