Home / 10,130.96-13,981.26-5,655.81

Finding the Fourth Proportional to 10,130.96, 13,981.26 and 5,655.81

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Solution

The fourth proportional to 10,130.96, 13,981.26 and 5,655.81 is: 7,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.96 : 13,981.26 = 5,655.81 : x
  2. Step 2: Convert to fraction form
    10,130.96/13,981.26 = 5,655.81/x
  3. Step 3: Cross multiply
    10,130.96x = 13,981.26 × 5,655.81
  4. Step 4: Simplify right side
    10,130.96x = 79,075,350.12
  5. Step 5: Solve for x
    x = 79,075,350.12/10,130.96
  6. Step 6: Final answer
    x = 7,805.32

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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.