Home / 22,528.71-31,090.79-12,970.04

Finding the Fourth Proportional to 22,528.71, 31,090.79 and 12,970.04

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Solution

The fourth proportional to 22,528.71, 31,090.79 and 12,970.04 is: 17,899.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,528.71 : 31,090.79 = 12,970.04 : x
  2. Step 2: Convert to fraction form
    22,528.71/31,090.79 = 12,970.04/x
  3. Step 3: Cross multiply
    22,528.71x = 31,090.79 × 12,970.04
  4. Step 4: Simplify right side
    22,528.71x = 403,248,666.90
  5. Step 5: Solve for x
    x = 403,248,666.90/22,528.71
  6. Step 6: Final answer
    x = 17,899.32

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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.