Home / 21,011.81-31,527.54-10,482.64

Finding the Fourth Proportional to 21,011.81, 31,527.54 and 10,482.64

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Solution

The fourth proportional to 21,011.81, 31,527.54 and 10,482.64 is: 15,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.81 : 31,527.54 = 10,482.64 : x
  2. Step 2: Convert to fraction form
    21,011.81/31,527.54 = 10,482.64/x
  3. Step 3: Cross multiply
    21,011.81x = 31,527.54 × 10,482.64
  4. Step 4: Simplify right side
    21,011.81x = 330,491,851.91
  5. Step 5: Solve for x
    x = 330,491,851.91/21,011.81
  6. Step 6: Final answer
    x = 15,728.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.