Home / 39,966.21-59,947.89-9,980.62

Finding the Fourth Proportional to 39,966.21, 59,947.89 and 9,980.62

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Solution

The fourth proportional to 39,966.21, 59,947.89 and 9,980.62 is: 14,970.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,966.21 : 59,947.89 = 9,980.62 : x
  2. Step 2: Convert to fraction form
    39,966.21/59,947.89 = 9,980.62/x
  3. Step 3: Cross multiply
    39,966.21x = 59,947.89 × 9,980.62
  4. Step 4: Simplify right side
    39,966.21x = 598,317,109.89
  5. Step 5: Solve for x
    x = 598,317,109.89/39,966.21
  6. Step 6: Final answer
    x = 14,970.57

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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.