Home / 19,812.47-27,342.95-10,861.70

Finding the Fourth Proportional to 19,812.47, 27,342.95 and 10,861.70

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Solution

The fourth proportional to 19,812.47, 27,342.95 and 10,861.70 is: 14,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.47 : 27,342.95 = 10,861.70 : x
  2. Step 2: Convert to fraction form
    19,812.47/27,342.95 = 10,861.70/x
  3. Step 3: Cross multiply
    19,812.47x = 27,342.95 × 10,861.70
  4. Step 4: Simplify right side
    19,812.47x = 296,990,865.71
  5. Step 5: Solve for x
    x = 296,990,865.71/19,812.47
  6. Step 6: Final answer
    x = 14,990.10

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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.