Home / 32,988.68-45,501.54-20,405.96

Finding the Fourth Proportional to 32,988.68, 45,501.54 and 20,405.96

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Solution

The fourth proportional to 32,988.68, 45,501.54 and 20,405.96 is: 28,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,988.68 : 45,501.54 = 20,405.96 : x
  2. Step 2: Convert to fraction form
    32,988.68/45,501.54 = 20,405.96/x
  3. Step 3: Cross multiply
    32,988.68x = 45,501.54 × 20,405.96
  4. Step 4: Simplify right side
    32,988.68x = 928,502,605.18
  5. Step 5: Solve for x
    x = 928,502,605.18/32,988.68
  6. Step 6: Final answer
    x = 28,146.10

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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.