Home / 15,475.98-21,356.64-8,402.36

Finding the Fourth Proportional to 15,475.98, 21,356.64 and 8,402.36

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Solution

The fourth proportional to 15,475.98, 21,356.64 and 8,402.36 is: 11,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.98 : 21,356.64 = 8,402.36 : x
  2. Step 2: Convert to fraction form
    15,475.98/21,356.64 = 8,402.36/x
  3. Step 3: Cross multiply
    15,475.98x = 21,356.64 × 8,402.36
  4. Step 4: Simplify right side
    15,475.98x = 179,446,177.67
  5. Step 5: Solve for x
    x = 179,446,177.67/15,475.98
  6. Step 6: Final answer
    x = 11,595.14

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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.