Home / 17,638.20-26,457.30-10,985.40

Finding the Fourth Proportional to 17,638.20, 26,457.30 and 10,985.40

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Solution

The fourth proportional to 17,638.20, 26,457.30 and 10,985.40 is: 16,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,638.20 : 26,457.30 = 10,985.40 : x
  2. Step 2: Convert to fraction form
    17,638.20/26,457.30 = 10,985.40/x
  3. Step 3: Cross multiply
    17,638.20x = 26,457.30 × 10,985.40
  4. Step 4: Simplify right side
    17,638.20x = 290,644,023.42
  5. Step 5: Solve for x
    x = 290,644,023.42/17,638.20
  6. Step 6: Final answer
    x = 16,478.10

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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.