Home / 22,515.16-31,070.86-12,579.16

Finding the Fourth Proportional to 22,515.16, 31,070.86 and 12,579.16

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Solution

The fourth proportional to 22,515.16, 31,070.86 and 12,579.16 is: 17,359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.16 : 31,070.86 = 12,579.16 : x
  2. Step 2: Convert to fraction form
    22,515.16/31,070.86 = 12,579.16/x
  3. Step 3: Cross multiply
    22,515.16x = 31,070.86 × 12,579.16
  4. Step 4: Simplify right side
    22,515.16x = 390,845,319.28
  5. Step 5: Solve for x
    x = 390,845,319.28/22,515.16
  6. Step 6: Final answer
    x = 17,359.21

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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.