Home / 15,532.79-21,435.28-8,459.67

Finding the Fourth Proportional to 15,532.79, 21,435.28 and 8,459.67

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Solution

The fourth proportional to 15,532.79, 21,435.28 and 8,459.67 is: 11,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.79 : 21,435.28 = 8,459.67 : x
  2. Step 2: Convert to fraction form
    15,532.79/21,435.28 = 8,459.67/x
  3. Step 3: Cross multiply
    15,532.79x = 21,435.28 × 8,459.67
  4. Step 4: Simplify right side
    15,532.79x = 181,335,395.16
  5. Step 5: Solve for x
    x = 181,335,395.16/15,532.79
  6. Step 6: Final answer
    x = 11,674.36

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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.