Home / 15,369.95-21,155.48-10,885.95

Finding the Fourth Proportional to 15,369.95, 21,155.48 and 10,885.95

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Solution

The fourth proportional to 15,369.95, 21,155.48 and 10,885.95 is: 14,983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.95 : 21,155.48 = 10,885.95 : x
  2. Step 2: Convert to fraction form
    15,369.95/21,155.48 = 10,885.95/x
  3. Step 3: Cross multiply
    15,369.95x = 21,155.48 × 10,885.95
  4. Step 4: Simplify right side
    15,369.95x = 230,297,443.08
  5. Step 5: Solve for x
    x = 230,297,443.08/15,369.95
  6. Step 6: Final answer
    x = 14,983.62

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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.