Home / 15,264.12-21,070.86-12,918.36

Finding the Fourth Proportional to 15,264.12, 21,070.86 and 12,918.36

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Solution

The fourth proportional to 15,264.12, 21,070.86 and 12,918.36 is: 17,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,264.12 : 21,070.86 = 12,918.36 : x
  2. Step 2: Convert to fraction form
    15,264.12/21,070.86 = 12,918.36/x
  3. Step 3: Cross multiply
    15,264.12x = 21,070.86 × 12,918.36
  4. Step 4: Simplify right side
    15,264.12x = 272,200,954.99
  5. Step 5: Solve for x
    x = 272,200,954.99/15,264.12
  6. Step 6: Final answer
    x = 17,832.73

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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.