Home / 39,980.25-59,970.71-13,685.22

Finding the Fourth Proportional to 39,980.25, 59,970.71 and 13,685.22

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Solution

The fourth proportional to 39,980.25, 59,970.71 and 13,685.22 is: 20,527.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.25 : 59,970.71 = 13,685.22 : x
  2. Step 2: Convert to fraction form
    39,980.25/59,970.71 = 13,685.22/x
  3. Step 3: Cross multiply
    39,980.25x = 59,970.71 × 13,685.22
  4. Step 4: Simplify right side
    39,980.25x = 820,712,394.12
  5. Step 5: Solve for x
    x = 820,712,394.12/39,980.25
  6. Step 6: Final answer
    x = 20,527.95

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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.