Home / 30,499.87-42,089.40-17,071.12

Finding the Fourth Proportional to 30,499.87, 42,089.40 and 17,071.12

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Solution

The fourth proportional to 30,499.87, 42,089.40 and 17,071.12 is: 23,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,499.87 : 42,089.40 = 17,071.12 : x
  2. Step 2: Convert to fraction form
    30,499.87/42,089.40 = 17,071.12/x
  3. Step 3: Cross multiply
    30,499.87x = 42,089.40 × 17,071.12
  4. Step 4: Simplify right side
    30,499.87x = 718,513,133.19
  5. Step 5: Solve for x
    x = 718,513,133.19/30,499.87
  6. Step 6: Final answer
    x = 23,557.91

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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.