Home / 15,299.68-21,174.28-14,931.53

Finding the Fourth Proportional to 15,299.68, 21,174.28 and 14,931.53

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Solution

The fourth proportional to 15,299.68, 21,174.28 and 14,931.53 is: 20,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.68 : 21,174.28 = 14,931.53 : x
  2. Step 2: Convert to fraction form
    15,299.68/21,174.28 = 14,931.53/x
  3. Step 3: Cross multiply
    15,299.68x = 21,174.28 × 14,931.53
  4. Step 4: Simplify right side
    15,299.68x = 316,164,322.39
  5. Step 5: Solve for x
    x = 316,164,322.39/15,299.68
  6. Step 6: Final answer
    x = 20,664.77

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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.