Home / 15,765.42-21,756.26-9,051.45

Finding the Fourth Proportional to 15,765.42, 21,756.26 and 9,051.45

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Solution

The fourth proportional to 15,765.42, 21,756.26 and 9,051.45 is: 12,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.42 : 21,756.26 = 9,051.45 : x
  2. Step 2: Convert to fraction form
    15,765.42/21,756.26 = 9,051.45/x
  3. Step 3: Cross multiply
    15,765.42x = 21,756.26 × 9,051.45
  4. Step 4: Simplify right side
    15,765.42x = 196,925,812.28
  5. Step 5: Solve for x
    x = 196,925,812.28/15,765.42
  6. Step 6: Final answer
    x = 12,491.00

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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.