Home / 43,239.12-64,860.64-13,251.20

Finding the Fourth Proportional to 43,239.12, 64,860.64 and 13,251.20

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Solution

The fourth proportional to 43,239.12, 64,860.64 and 13,251.20 is: 19,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,239.12 : 64,860.64 = 13,251.20 : x
  2. Step 2: Convert to fraction form
    43,239.12/64,860.64 = 13,251.20/x
  3. Step 3: Cross multiply
    43,239.12x = 64,860.64 × 13,251.20
  4. Step 4: Simplify right side
    43,239.12x = 859,481,312.77
  5. Step 5: Solve for x
    x = 859,481,312.77/43,239.12
  6. Step 6: Final answer
    x = 19,877.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.