Home / 30,702.04-42,368.88-18,127.60

Finding the Fourth Proportional to 30,702.04, 42,368.88 and 18,127.60

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Solution

The fourth proportional to 30,702.04, 42,368.88 and 18,127.60 is: 25,016.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.04 : 42,368.88 = 18,127.60 : x
  2. Step 2: Convert to fraction form
    30,702.04/42,368.88 = 18,127.60/x
  3. Step 3: Cross multiply
    30,702.04x = 42,368.88 × 18,127.60
  4. Step 4: Simplify right side
    30,702.04x = 768,046,109.09
  5. Step 5: Solve for x
    x = 768,046,109.09/30,702.04
  6. Step 6: Final answer
    x = 25,016.13

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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.