Home / 14,210.40-21,315.60-12,981.60

Finding the Fourth Proportional to 14,210.40, 21,315.60 and 12,981.60

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Solution

The fourth proportional to 14,210.40, 21,315.60 and 12,981.60 is: 19,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,210.40 : 21,315.60 = 12,981.60 : x
  2. Step 2: Convert to fraction form
    14,210.40/21,315.60 = 12,981.60/x
  3. Step 3: Cross multiply
    14,210.40x = 21,315.60 × 12,981.60
  4. Step 4: Simplify right side
    14,210.40x = 276,710,592.96
  5. Step 5: Solve for x
    x = 276,710,592.96/14,210.40
  6. Step 6: Final answer
    x = 19,472.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.