Home / 13,985.16-19,302.28-8,020.86

Finding the Fourth Proportional to 13,985.16, 19,302.28 and 8,020.86

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Solution

The fourth proportional to 13,985.16, 19,302.28 and 8,020.86 is: 11,070.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.16 : 19,302.28 = 8,020.86 : x
  2. Step 2: Convert to fraction form
    13,985.16/19,302.28 = 8,020.86/x
  3. Step 3: Cross multiply
    13,985.16x = 19,302.28 × 8,020.86
  4. Step 4: Simplify right side
    13,985.16x = 154,820,885.56
  5. Step 5: Solve for x
    x = 154,820,885.56/13,985.16
  6. Step 6: Final answer
    x = 11,070.37

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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.