Home / 21,957.18-30,298.71-14,886.30

Finding the Fourth Proportional to 21,957.18, 30,298.71 and 14,886.30

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Solution

The fourth proportional to 21,957.18, 30,298.71 and 14,886.30 is: 20,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.18 : 30,298.71 = 14,886.30 : x
  2. Step 2: Convert to fraction form
    21,957.18/30,298.71 = 14,886.30/x
  3. Step 3: Cross multiply
    21,957.18x = 30,298.71 × 14,886.30
  4. Step 4: Simplify right side
    21,957.18x = 451,035,686.67
  5. Step 5: Solve for x
    x = 451,035,686.67/21,957.18
  6. Step 6: Final answer
    x = 20,541.60

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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.