Home / 21,210.17-29,266.77-12,255.93

Finding the Fourth Proportional to 21,210.17, 29,266.77 and 12,255.93

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Solution

The fourth proportional to 21,210.17, 29,266.77 and 12,255.93 is: 16,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.17 : 29,266.77 = 12,255.93 : x
  2. Step 2: Convert to fraction form
    21,210.17/29,266.77 = 12,255.93/x
  3. Step 3: Cross multiply
    21,210.17x = 29,266.77 × 12,255.93
  4. Step 4: Simplify right side
    21,210.17x = 358,691,461.47
  5. Step 5: Solve for x
    x = 358,691,461.47/21,210.17
  6. Step 6: Final answer
    x = 16,911.30

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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.