Home / 42,875.68-64,317.62-13,285.56

Finding the Fourth Proportional to 42,875.68, 64,317.62 and 13,285.56

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Solution

The fourth proportional to 42,875.68, 64,317.62 and 13,285.56 is: 19,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,875.68 : 64,317.62 = 13,285.56 : x
  2. Step 2: Convert to fraction form
    42,875.68/64,317.62 = 13,285.56/x
  3. Step 3: Cross multiply
    42,875.68x = 64,317.62 × 13,285.56
  4. Step 4: Simplify right side
    42,875.68x = 854,495,599.57
  5. Step 5: Solve for x
    x = 854,495,599.57/42,875.68
  6. Step 6: Final answer
    x = 19,929.61

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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.