Home / 18,503.02-27,771.54-13,312.54

Finding the Fourth Proportional to 18,503.02, 27,771.54 and 13,312.54

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Solution

The fourth proportional to 18,503.02, 27,771.54 and 13,312.54 is: 19,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.02 : 27,771.54 = 13,312.54 : x
  2. Step 2: Convert to fraction form
    18,503.02/27,771.54 = 13,312.54/x
  3. Step 3: Cross multiply
    18,503.02x = 27,771.54 × 13,312.54
  4. Step 4: Simplify right side
    18,503.02x = 369,709,737.11
  5. Step 5: Solve for x
    x = 369,709,737.11/18,503.02
  6. Step 6: Final answer
    x = 19,981.05

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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.