Home / 15,681.45-21,637.61-8,875.44

Finding the Fourth Proportional to 15,681.45, 21,637.61 and 8,875.44

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Solution

The fourth proportional to 15,681.45, 21,637.61 and 8,875.44 is: 12,246.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.45 : 21,637.61 = 8,875.44 : x
  2. Step 2: Convert to fraction form
    15,681.45/21,637.61 = 8,875.44/x
  3. Step 3: Cross multiply
    15,681.45x = 21,637.61 × 8,875.44
  4. Step 4: Simplify right side
    15,681.45x = 192,043,264.92
  5. Step 5: Solve for x
    x = 192,043,264.92/15,681.45
  6. Step 6: Final answer
    x = 12,246.52

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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.