Home / 14,971.53-20,656.91-10,985.72

Finding the Fourth Proportional to 14,971.53, 20,656.91 and 10,985.72

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Solution

The fourth proportional to 14,971.53, 20,656.91 and 10,985.72 is: 15,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,971.53 : 20,656.91 = 10,985.72 : x
  2. Step 2: Convert to fraction form
    14,971.53/20,656.91 = 10,985.72/x
  3. Step 3: Cross multiply
    14,971.53x = 20,656.91 × 10,985.72
  4. Step 4: Simplify right side
    14,971.53x = 226,930,974.40
  5. Step 5: Solve for x
    x = 226,930,974.40/14,971.53
  6. Step 6: Final answer
    x = 15,157.50

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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.