Home / 19,368.60-26,724.78-13,390.80

Finding the Fourth Proportional to 19,368.60, 26,724.78 and 13,390.80

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Solution

The fourth proportional to 19,368.60, 26,724.78 and 13,390.80 is: 18,476.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.60 : 26,724.78 = 13,390.80 : x
  2. Step 2: Convert to fraction form
    19,368.60/26,724.78 = 13,390.80/x
  3. Step 3: Cross multiply
    19,368.60x = 26,724.78 × 13,390.80
  4. Step 4: Simplify right side
    19,368.60x = 357,866,184.02
  5. Step 5: Solve for x
    x = 357,866,184.02/19,368.60
  6. Step 6: Final answer
    x = 18,476.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.