Home / 15,853.68-21,878.16-10,274.40

Finding the Fourth Proportional to 15,853.68, 21,878.16 and 10,274.40

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Solution

The fourth proportional to 15,853.68, 21,878.16 and 10,274.40 is: 14,178.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.68 : 21,878.16 = 10,274.40 : x
  2. Step 2: Convert to fraction form
    15,853.68/21,878.16 = 10,274.40/x
  3. Step 3: Cross multiply
    15,853.68x = 21,878.16 × 10,274.40
  4. Step 4: Simplify right side
    15,853.68x = 224,784,967.10
  5. Step 5: Solve for x
    x = 224,784,967.10/15,853.68
  6. Step 6: Final answer
    x = 14,178.72

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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.