Home / 30,055.50-45,053.95-12,530.34

Finding the Fourth Proportional to 30,055.50, 45,053.95 and 12,530.34

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Solution

The fourth proportional to 30,055.50, 45,053.95 and 12,530.34 is: 18,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,055.50 : 45,053.95 = 12,530.34 : x
  2. Step 2: Convert to fraction form
    30,055.50/45,053.95 = 12,530.34/x
  3. Step 3: Cross multiply
    30,055.50x = 45,053.95 × 12,530.34
  4. Step 4: Simplify right side
    30,055.50x = 564,541,199.21
  5. Step 5: Solve for x
    x = 564,541,199.21/30,055.50
  6. Step 6: Final answer
    x = 18,783.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.