Home / 13,607.01-18,763.86-12,813.30

Finding the Fourth Proportional to 13,607.01, 18,763.86 and 12,813.30

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Solution

The fourth proportional to 13,607.01, 18,763.86 and 12,813.30 is: 17,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.01 : 18,763.86 = 12,813.30 : x
  2. Step 2: Convert to fraction form
    13,607.01/18,763.86 = 12,813.30/x
  3. Step 3: Cross multiply
    13,607.01x = 18,763.86 × 12,813.30
  4. Step 4: Simplify right side
    13,607.01x = 240,426,967.34
  5. Step 5: Solve for x
    x = 240,426,967.34/13,607.01
  6. Step 6: Final answer
    x = 17,669.35

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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.