Home / 10,515.21-15,686.64-10,229.17

Finding the Fourth Proportional to 10,515.21, 15,686.64 and 10,229.17

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Solution

The fourth proportional to 10,515.21, 15,686.64 and 10,229.17 is: 15,259.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.21 : 15,686.64 = 10,229.17 : x
  2. Step 2: Convert to fraction form
    10,515.21/15,686.64 = 10,229.17/x
  3. Step 3: Cross multiply
    10,515.21x = 15,686.64 × 10,229.17
  4. Step 4: Simplify right side
    10,515.21x = 160,461,307.29
  5. Step 5: Solve for x
    x = 160,461,307.29/10,515.21
  6. Step 6: Final answer
    x = 15,259.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.