Home / 13,356.02-18,419.23-8,570.45

Finding the Fourth Proportional to 13,356.02, 18,419.23 and 8,570.45

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Solution

The fourth proportional to 13,356.02, 18,419.23 and 8,570.45 is: 11,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.02 : 18,419.23 = 8,570.45 : x
  2. Step 2: Convert to fraction form
    13,356.02/18,419.23 = 8,570.45/x
  3. Step 3: Cross multiply
    13,356.02x = 18,419.23 × 8,570.45
  4. Step 4: Simplify right side
    13,356.02x = 157,861,089.75
  5. Step 5: Solve for x
    x = 157,861,089.75/13,356.02
  6. Step 6: Final answer
    x = 11,819.47

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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.