Home / 22,038.12-30,412.80-12,478.50

Finding the Fourth Proportional to 22,038.12, 30,412.80 and 12,478.50

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Solution

The fourth proportional to 22,038.12, 30,412.80 and 12,478.50 is: 17,220.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,038.12 : 30,412.80 = 12,478.50 : x
  2. Step 2: Convert to fraction form
    22,038.12/30,412.80 = 12,478.50/x
  3. Step 3: Cross multiply
    22,038.12x = 30,412.80 × 12,478.50
  4. Step 4: Simplify right side
    22,038.12x = 379,506,124.80
  5. Step 5: Solve for x
    x = 379,506,124.80/22,038.12
  6. Step 6: Final answer
    x = 17,220.44

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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.