Home / 42,936.12-64,384.66-13,345.08

Finding the Fourth Proportional to 42,936.12, 64,384.66 and 13,345.08

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Solution

The fourth proportional to 42,936.12, 64,384.66 and 13,345.08 is: 20,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,936.12 : 64,384.66 = 13,345.08 : x
  2. Step 2: Convert to fraction form
    42,936.12/64,384.66 = 13,345.08/x
  3. Step 3: Cross multiply
    42,936.12x = 64,384.66 × 13,345.08
  4. Step 4: Simplify right side
    42,936.12x = 859,218,438.47
  5. Step 5: Solve for x
    x = 859,218,438.47/42,936.12
  6. Step 6: Final answer
    x = 20,011.55

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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.