Home / 19,946.49-27,539.36-15,400.90

Finding the Fourth Proportional to 19,946.49, 27,539.36 and 15,400.90

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Solution

The fourth proportional to 19,946.49, 27,539.36 and 15,400.90 is: 21,263.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,946.49 : 27,539.36 = 15,400.90 : x
  2. Step 2: Convert to fraction form
    19,946.49/27,539.36 = 15,400.90/x
  3. Step 3: Cross multiply
    19,946.49x = 27,539.36 × 15,400.90
  4. Step 4: Simplify right side
    19,946.49x = 424,130,929.42
  5. Step 5: Solve for x
    x = 424,130,929.42/19,946.49
  6. Step 6: Final answer
    x = 21,263.44

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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.