Home / 15,699.20-21,666.29-8,983.49

Finding the Fourth Proportional to 15,699.20, 21,666.29 and 8,983.49

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Solution

The fourth proportional to 15,699.20, 21,666.29 and 8,983.49 is: 12,398.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.20 : 21,666.29 = 8,983.49 : x
  2. Step 2: Convert to fraction form
    15,699.20/21,666.29 = 8,983.49/x
  3. Step 3: Cross multiply
    15,699.20x = 21,666.29 × 8,983.49
  4. Step 4: Simplify right side
    15,699.20x = 194,638,746.30
  5. Step 5: Solve for x
    x = 194,638,746.30/15,699.20
  6. Step 6: Final answer
    x = 12,398.01

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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.