Home / 21,848.76-30,155.16-12,895.68

Finding the Fourth Proportional to 21,848.76, 30,155.16 and 12,895.68

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Solution

The fourth proportional to 21,848.76, 30,155.16 and 12,895.68 is: 17,798.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.76 : 30,155.16 = 12,895.68 : x
  2. Step 2: Convert to fraction form
    21,848.76/30,155.16 = 12,895.68/x
  3. Step 3: Cross multiply
    21,848.76x = 30,155.16 × 12,895.68
  4. Step 4: Simplify right side
    21,848.76x = 388,871,293.71
  5. Step 5: Solve for x
    x = 388,871,293.71/21,848.76
  6. Step 6: Final answer
    x = 17,798.32

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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.