Home / 13,666.02-18,855.63-8,358.90

Finding the Fourth Proportional to 13,666.02, 18,855.63 and 8,358.90

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Solution

The fourth proportional to 13,666.02, 18,855.63 and 8,358.90 is: 11,533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.02 : 18,855.63 = 8,358.90 : x
  2. Step 2: Convert to fraction form
    13,666.02/18,855.63 = 8,358.90/x
  3. Step 3: Cross multiply
    13,666.02x = 18,855.63 × 8,358.90
  4. Step 4: Simplify right side
    13,666.02x = 157,612,325.61
  5. Step 5: Solve for x
    x = 157,612,325.61/13,666.02
  6. Step 6: Final answer
    x = 11,533.15

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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.