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Finding the Fourth Proportional to 14,358.63, 19,814.28 and 7,985.19

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Solution

The fourth proportional to 14,358.63, 19,814.28 and 7,985.19 is: 11,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,358.63 : 19,814.28 = 7,985.19 : x
  2. Step 2: Convert to fraction form
    14,358.63/19,814.28 = 7,985.19/x
  3. Step 3: Cross multiply
    14,358.63x = 19,814.28 × 7,985.19
  4. Step 4: Simplify right side
    14,358.63x = 158,220,790.51
  5. Step 5: Solve for x
    x = 158,220,790.51/14,358.63
  6. Step 6: Final answer
    x = 11,019.21

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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.