Home / 12,938.40-17,852.02-9,358.62

Finding the Fourth Proportional to 12,938.40, 17,852.02 and 9,358.62

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Solution

The fourth proportional to 12,938.40, 17,852.02 and 9,358.62 is: 12,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.40 : 17,852.02 = 9,358.62 : x
  2. Step 2: Convert to fraction form
    12,938.40/17,852.02 = 9,358.62/x
  3. Step 3: Cross multiply
    12,938.40x = 17,852.02 × 9,358.62
  4. Step 4: Simplify right side
    12,938.40x = 167,070,271.41
  5. Step 5: Solve for x
    x = 167,070,271.41/12,938.40
  6. Step 6: Final answer
    x = 12,912.75

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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.