Home / 30,964.40-42,734.52-18,389.16

Finding the Fourth Proportional to 30,964.40, 42,734.52 and 18,389.16

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Solution

The fourth proportional to 30,964.40, 42,734.52 and 18,389.16 is: 25,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.40 : 42,734.52 = 18,389.16 : x
  2. Step 2: Convert to fraction form
    30,964.40/42,734.52 = 18,389.16/x
  3. Step 3: Cross multiply
    30,964.40x = 42,734.52 × 18,389.16
  4. Step 4: Simplify right side
    30,964.40x = 785,851,925.80
  5. Step 5: Solve for x
    x = 785,851,925.80/30,964.40
  6. Step 6: Final answer
    x = 25,379.21

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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.