Home / 10,130.75-13,981.13-5,655.37

Finding the Fourth Proportional to 10,130.75, 13,981.13 and 5,655.37

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Solution

The fourth proportional to 10,130.75, 13,981.13 and 5,655.37 is: 7,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.75 : 13,981.13 = 5,655.37 : x
  2. Step 2: Convert to fraction form
    10,130.75/13,981.13 = 5,655.37/x
  3. Step 3: Cross multiply
    10,130.75x = 13,981.13 × 5,655.37
  4. Step 4: Simplify right side
    10,130.75x = 79,068,477.31
  5. Step 5: Solve for x
    x = 79,068,477.31/10,130.75
  6. Step 6: Final answer
    x = 7,804.80

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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.