Home / 13,487.94-18,612.95-7,438.18

Finding the Fourth Proportional to 13,487.94, 18,612.95 and 7,438.18

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Solution

The fourth proportional to 13,487.94, 18,612.95 and 7,438.18 is: 10,264.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.94 : 18,612.95 = 7,438.18 : x
  2. Step 2: Convert to fraction form
    13,487.94/18,612.95 = 7,438.18/x
  3. Step 3: Cross multiply
    13,487.94x = 18,612.95 × 7,438.18
  4. Step 4: Simplify right side
    13,487.94x = 138,446,384.04
  5. Step 5: Solve for x
    x = 138,446,384.04/13,487.94
  6. Step 6: Final answer
    x = 10,264.46

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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.