Home / 13,153.91-18,158.70-7,777.26

Finding the Fourth Proportional to 13,153.91, 18,158.70 and 7,777.26

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Solution

The fourth proportional to 13,153.91, 18,158.70 and 7,777.26 is: 10,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.91 : 18,158.70 = 7,777.26 : x
  2. Step 2: Convert to fraction form
    13,153.91/18,158.70 = 7,777.26/x
  3. Step 3: Cross multiply
    13,153.91x = 18,158.70 × 7,777.26
  4. Step 4: Simplify right side
    13,153.91x = 141,224,931.16
  5. Step 5: Solve for x
    x = 141,224,931.16/13,153.91
  6. Step 6: Final answer
    x = 10,736.35

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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.