Home / 15,493.50-21,437.33-13,508.19

Finding the Fourth Proportional to 15,493.50, 21,437.33 and 13,508.19

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Solution

The fourth proportional to 15,493.50, 21,437.33 and 13,508.19 is: 18,690.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.50 : 21,437.33 = 13,508.19 : x
  2. Step 2: Convert to fraction form
    15,493.50/21,437.33 = 13,508.19/x
  3. Step 3: Cross multiply
    15,493.50x = 21,437.33 × 13,508.19
  4. Step 4: Simplify right side
    15,493.50x = 289,579,459.19
  5. Step 5: Solve for x
    x = 289,579,459.19/15,493.50
  6. Step 6: Final answer
    x = 18,690.38

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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.