Home / 22,281.93-30,742.47-12,721.50

Finding the Fourth Proportional to 22,281.93, 30,742.47 and 12,721.50

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Solution

The fourth proportional to 22,281.93, 30,742.47 and 12,721.50 is: 17,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.93 : 30,742.47 = 12,721.50 : x
  2. Step 2: Convert to fraction form
    22,281.93/30,742.47 = 12,721.50/x
  3. Step 3: Cross multiply
    22,281.93x = 30,742.47 × 12,721.50
  4. Step 4: Simplify right side
    22,281.93x = 391,090,332.11
  5. Step 5: Solve for x
    x = 391,090,332.11/22,281.93
  6. Step 6: Final answer
    x = 17,551.91

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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.