Home / 21,570.04-29,760.84-12,619.74

Finding the Fourth Proportional to 21,570.04, 29,760.84 and 12,619.74

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Solution

The fourth proportional to 21,570.04, 29,760.84 and 12,619.74 is: 17,411.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.04 : 29,760.84 = 12,619.74 : x
  2. Step 2: Convert to fraction form
    21,570.04/29,760.84 = 12,619.74/x
  3. Step 3: Cross multiply
    21,570.04x = 29,760.84 × 12,619.74
  4. Step 4: Simplify right side
    21,570.04x = 375,574,062.98
  5. Step 5: Solve for x
    x = 375,574,062.98/21,570.04
  6. Step 6: Final answer
    x = 17,411.84

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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.