Home / 13,579.95-18,737.81-8,738.93

Finding the Fourth Proportional to 13,579.95, 18,737.81 and 8,738.93

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Solution

The fourth proportional to 13,579.95, 18,737.81 and 8,738.93 is: 12,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.95 : 18,737.81 = 8,738.93 : x
  2. Step 2: Convert to fraction form
    13,579.95/18,737.81 = 8,738.93/x
  3. Step 3: Cross multiply
    13,579.95x = 18,737.81 × 8,738.93
  4. Step 4: Simplify right side
    13,579.95x = 163,748,409.94
  5. Step 5: Solve for x
    x = 163,748,409.94/13,579.95
  6. Step 6: Final answer
    x = 12,058.10

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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.