Home / 15,643.63-21,588.28-8,570.04

Finding the Fourth Proportional to 15,643.63, 21,588.28 and 8,570.04

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Solution

The fourth proportional to 15,643.63, 21,588.28 and 8,570.04 is: 11,826.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.63 : 21,588.28 = 8,570.04 : x
  2. Step 2: Convert to fraction form
    15,643.63/21,588.28 = 8,570.04/x
  3. Step 3: Cross multiply
    15,643.63x = 21,588.28 × 8,570.04
  4. Step 4: Simplify right side
    15,643.63x = 185,012,423.13
  5. Step 5: Solve for x
    x = 185,012,423.13/15,643.63
  6. Step 6: Final answer
    x = 11,826.69

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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.