Home / 22,530.16-31,088.91-12,457.21

Finding the Fourth Proportional to 22,530.16, 31,088.91 and 12,457.21

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Solution

The fourth proportional to 22,530.16, 31,088.91 and 12,457.21 is: 17,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,530.16 : 31,088.91 = 12,457.21 : x
  2. Step 2: Convert to fraction form
    22,530.16/31,088.91 = 12,457.21/x
  3. Step 3: Cross multiply
    22,530.16x = 31,088.91 × 12,457.21
  4. Step 4: Simplify right side
    22,530.16x = 387,281,080.54
  5. Step 5: Solve for x
    x = 387,281,080.54/22,530.16
  6. Step 6: Final answer
    x = 17,189.45

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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.