Home / 20,924.30-28,875.32-12,430.58

Finding the Fourth Proportional to 20,924.30, 28,875.32 and 12,430.58

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Solution

The fourth proportional to 20,924.30, 28,875.32 and 12,430.58 is: 17,154.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.30 : 28,875.32 = 12,430.58 : x
  2. Step 2: Convert to fraction form
    20,924.30/28,875.32 = 12,430.58/x
  3. Step 3: Cross multiply
    20,924.30x = 28,875.32 × 12,430.58
  4. Step 4: Simplify right side
    20,924.30x = 358,936,975.29
  5. Step 5: Solve for x
    x = 358,936,975.29/20,924.30
  6. Step 6: Final answer
    x = 17,154.07

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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.