Home / 19,867.60-27,417.72-10,915.28

Finding the Fourth Proportional to 19,867.60, 27,417.72 and 10,915.28

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Solution

The fourth proportional to 19,867.60, 27,417.72 and 10,915.28 is: 15,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867.60 : 27,417.72 = 10,915.28 : x
  2. Step 2: Convert to fraction form
    19,867.60/27,417.72 = 10,915.28/x
  3. Step 3: Cross multiply
    19,867.60x = 27,417.72 × 10,915.28
  4. Step 4: Simplify right side
    19,867.60x = 299,272,090.76
  5. Step 5: Solve for x
    x = 299,272,090.76/19,867.60
  6. Step 6: Final answer
    x = 15,063.32

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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.