Home / 15,657.98-21,595.44-13,765.53

Finding the Fourth Proportional to 15,657.98, 21,595.44 and 13,765.53

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Solution

The fourth proportional to 15,657.98, 21,595.44 and 13,765.53 is: 18,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.98 : 21,595.44 = 13,765.53 : x
  2. Step 2: Convert to fraction form
    15,657.98/21,595.44 = 13,765.53/x
  3. Step 3: Cross multiply
    15,657.98x = 21,595.44 × 13,765.53
  4. Step 4: Simplify right side
    15,657.98x = 297,272,677.18
  5. Step 5: Solve for x
    x = 297,272,677.18/15,657.98
  6. Step 6: Final answer
    x = 18,985.38

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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.