Home / 39,979.71-59,903.89-13,670.10

Finding the Fourth Proportional to 39,979.71, 59,903.89 and 13,670.10

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Solution

The fourth proportional to 39,979.71, 59,903.89 and 13,670.10 is: 20,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.71 : 59,903.89 = 13,670.10 : x
  2. Step 2: Convert to fraction form
    39,979.71/59,903.89 = 13,670.10/x
  3. Step 3: Cross multiply
    39,979.71x = 59,903.89 × 13,670.10
  4. Step 4: Simplify right side
    39,979.71x = 818,892,132.51
  5. Step 5: Solve for x
    x = 818,892,132.51/39,979.71
  6. Step 6: Final answer
    x = 20,482.69

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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.