Home / 22,988.65-31,721.08-12,916.60

Finding the Fourth Proportional to 22,988.65, 31,721.08 and 12,916.60

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Solution

The fourth proportional to 22,988.65, 31,721.08 and 12,916.60 is: 17,823.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988.65 : 31,721.08 = 12,916.60 : x
  2. Step 2: Convert to fraction form
    22,988.65/31,721.08 = 12,916.60/x
  3. Step 3: Cross multiply
    22,988.65x = 31,721.08 × 12,916.60
  4. Step 4: Simplify right side
    22,988.65x = 409,728,501.93
  5. Step 5: Solve for x
    x = 409,728,501.93/22,988.65
  6. Step 6: Final answer
    x = 17,823.08

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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.