Home / 30,386.40-45,606.60-17,890.80

Finding the Fourth Proportional to 30,386.40, 45,606.60 and 17,890.80

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Solution

The fourth proportional to 30,386.40, 45,606.60 and 17,890.80 is: 26,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.40 : 45,606.60 = 17,890.80 : x
  2. Step 2: Convert to fraction form
    30,386.40/45,606.60 = 17,890.80/x
  3. Step 3: Cross multiply
    30,386.40x = 45,606.60 × 17,890.80
  4. Step 4: Simplify right side
    30,386.40x = 815,938,559.28
  5. Step 5: Solve for x
    x = 815,938,559.28/30,386.40
  6. Step 6: Final answer
    x = 26,852.10

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1.5x scale

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.