Home / 15,887.61-21,899.84-12,098.70

Finding the Fourth Proportional to 15,887.61, 21,899.84 and 12,098.70

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Solution

The fourth proportional to 15,887.61, 21,899.84 and 12,098.70 is: 16,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.61 : 21,899.84 = 12,098.70 : x
  2. Step 2: Convert to fraction form
    15,887.61/21,899.84 = 12,098.70/x
  3. Step 3: Cross multiply
    15,887.61x = 21,899.84 × 12,098.70
  4. Step 4: Simplify right side
    15,887.61x = 264,959,533.71
  5. Step 5: Solve for x
    x = 264,959,533.71/15,887.61
  6. Step 6: Final answer
    x = 16,677.12

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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.