Home / 22,457.47-30,990.95-12,897.56

Finding the Fourth Proportional to 22,457.47, 30,990.95 and 12,897.56

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Solution

The fourth proportional to 22,457.47, 30,990.95 and 12,897.56 is: 17,798.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,457.47 : 30,990.95 = 12,897.56 : x
  2. Step 2: Convert to fraction form
    22,457.47/30,990.95 = 12,897.56/x
  3. Step 3: Cross multiply
    22,457.47x = 30,990.95 × 12,897.56
  4. Step 4: Simplify right side
    22,457.47x = 399,707,572.59
  5. Step 5: Solve for x
    x = 399,707,572.59/22,457.47
  6. Step 6: Final answer
    x = 17,798.42

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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.