Home / 22,621.23-31,212.64-12,547.51

Finding the Fourth Proportional to 22,621.23, 31,212.64 and 12,547.51

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Solution

The fourth proportional to 22,621.23, 31,212.64 and 12,547.51 is: 17,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.23 : 31,212.64 = 12,547.51 : x
  2. Step 2: Convert to fraction form
    22,621.23/31,212.64 = 12,547.51/x
  3. Step 3: Cross multiply
    22,621.23x = 31,212.64 × 12,547.51
  4. Step 4: Simplify right side
    22,621.23x = 391,640,850.18
  5. Step 5: Solve for x
    x = 391,640,850.18/22,621.23
  6. Step 6: Final answer
    x = 17,312.98

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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.