Home / 20,030.79-30,002.40-10,153.11

Finding the Fourth Proportional to 20,030.79, 30,002.40 and 10,153.11

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Solution

The fourth proportional to 20,030.79, 30,002.40 and 10,153.11 is: 15,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.79 : 30,002.40 = 10,153.11 : x
  2. Step 2: Convert to fraction form
    20,030.79/30,002.40 = 10,153.11/x
  3. Step 3: Cross multiply
    20,030.79x = 30,002.40 × 10,153.11
  4. Step 4: Simplify right side
    20,030.79x = 304,617,667.46
  5. Step 5: Solve for x
    x = 304,617,667.46/20,030.79
  6. Step 6: Final answer
    x = 15,207.47

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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.