Home / 13,731.75-18,957.95-8,700.26

Finding the Fourth Proportional to 13,731.75, 18,957.95 and 8,700.26

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Solution

The fourth proportional to 13,731.75, 18,957.95 and 8,700.26 is: 12,011.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.75 : 18,957.95 = 8,700.26 : x
  2. Step 2: Convert to fraction form
    13,731.75/18,957.95 = 8,700.26/x
  3. Step 3: Cross multiply
    13,731.75x = 18,957.95 × 8,700.26
  4. Step 4: Simplify right side
    13,731.75x = 164,938,955.78
  5. Step 5: Solve for x
    x = 164,938,955.78/13,731.75
  6. Step 6: Final answer
    x = 12,011.50

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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.