Home / 19,880.12-27,461.12-13,931.48

Finding the Fourth Proportional to 19,880.12, 27,461.12 and 13,931.48

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Solution

The fourth proportional to 19,880.12, 27,461.12 and 13,931.48 is: 19,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.12 : 27,461.12 = 13,931.48 : x
  2. Step 2: Convert to fraction form
    19,880.12/27,461.12 = 13,931.48/x
  3. Step 3: Cross multiply
    19,880.12x = 27,461.12 × 13,931.48
  4. Step 4: Simplify right side
    19,880.12x = 382,574,044.06
  5. Step 5: Solve for x
    x = 382,574,044.06/19,880.12
  6. Step 6: Final answer
    x = 19,244.05

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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.