Home / 28,252.04-38,988.90-15,679.22

Finding the Fourth Proportional to 28,252.04, 38,988.90 and 15,679.22

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Solution

The fourth proportional to 28,252.04, 38,988.90 and 15,679.22 is: 21,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.04 : 38,988.90 = 15,679.22 : x
  2. Step 2: Convert to fraction form
    28,252.04/38,988.90 = 15,679.22/x
  3. Step 3: Cross multiply
    28,252.04x = 38,988.90 × 15,679.22
  4. Step 4: Simplify right side
    28,252.04x = 611,315,345.71
  5. Step 5: Solve for x
    x = 611,315,345.71/28,252.04
  6. Step 6: Final answer
    x = 21,637.92

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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.