Home / 21,595.10-29,802.38-12,643.28

Finding the Fourth Proportional to 21,595.10, 29,802.38 and 12,643.28

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Solution

The fourth proportional to 21,595.10, 29,802.38 and 12,643.28 is: 17,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.10 : 29,802.38 = 12,643.28 : x
  2. Step 2: Convert to fraction form
    21,595.10/29,802.38 = 12,643.28/x
  3. Step 3: Cross multiply
    21,595.10x = 29,802.38 × 12,643.28
  4. Step 4: Simplify right side
    21,595.10x = 376,799,622.78
  5. Step 5: Solve for x
    x = 376,799,622.78/21,595.10
  6. Step 6: Final answer
    x = 17,448.39

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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.