Home / 13,346.02-18,417.81-8,638.50

Finding the Fourth Proportional to 13,346.02, 18,417.81 and 8,638.50

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Solution

The fourth proportional to 13,346.02, 18,417.81 and 8,638.50 is: 11,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.02 : 18,417.81 = 8,638.50 : x
  2. Step 2: Convert to fraction form
    13,346.02/18,417.81 = 8,638.50/x
  3. Step 3: Cross multiply
    13,346.02x = 18,417.81 × 8,638.50
  4. Step 4: Simplify right side
    13,346.02x = 159,102,176.66
  5. Step 5: Solve for x
    x = 159,102,176.66/13,346.02
  6. Step 6: Final answer
    x = 11,921.32

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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.