Home / 23,130.17-31,918.99-12,920.93

Finding the Fourth Proportional to 23,130.17, 31,918.99 and 12,920.93

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Solution

The fourth proportional to 23,130.17, 31,918.99 and 12,920.93 is: 17,830.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.17 : 31,918.99 = 12,920.93 : x
  2. Step 2: Convert to fraction form
    23,130.17/31,918.99 = 12,920.93/x
  3. Step 3: Cross multiply
    23,130.17x = 31,918.99 × 12,920.93
  4. Step 4: Simplify right side
    23,130.17x = 412,423,035.46
  5. Step 5: Solve for x
    x = 412,423,035.46/23,130.17
  6. Step 6: Final answer
    x = 17,830.52

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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.