Home / 30,555.57-45,903.53-21,570.34

Finding the Fourth Proportional to 30,555.57, 45,903.53 and 21,570.34

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Solution

The fourth proportional to 30,555.57, 45,903.53 and 21,570.34 is: 32,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.57 : 45,903.53 = 21,570.34 : x
  2. Step 2: Convert to fraction form
    30,555.57/45,903.53 = 21,570.34/x
  3. Step 3: Cross multiply
    30,555.57x = 45,903.53 × 21,570.34
  4. Step 4: Simplify right side
    30,555.57x = 990,154,779.72
  5. Step 5: Solve for x
    x = 990,154,779.72/30,555.57
  6. Step 6: Final answer
    x = 32,405.05

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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.