Home / 19,938.45-27,515.41-10,985.89

Finding the Fourth Proportional to 19,938.45, 27,515.41 and 10,985.89

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Solution

The fourth proportional to 19,938.45, 27,515.41 and 10,985.89 is: 15,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.45 : 27,515.41 = 10,985.89 : x
  2. Step 2: Convert to fraction form
    19,938.45/27,515.41 = 10,985.89/x
  3. Step 3: Cross multiply
    19,938.45x = 27,515.41 × 10,985.89
  4. Step 4: Simplify right side
    19,938.45x = 302,281,267.56
  5. Step 5: Solve for x
    x = 302,281,267.56/19,938.45
  6. Step 6: Final answer
    x = 15,160.72

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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.