Home / 30,156.18-45,238.53-10,430.06

Finding the Fourth Proportional to 30,156.18, 45,238.53 and 10,430.06

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Solution

The fourth proportional to 30,156.18, 45,238.53 and 10,430.06 is: 15,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.18 : 45,238.53 = 10,430.06 : x
  2. Step 2: Convert to fraction form
    30,156.18/45,238.53 = 10,430.06/x
  3. Step 3: Cross multiply
    30,156.18x = 45,238.53 × 10,430.06
  4. Step 4: Simplify right side
    30,156.18x = 471,840,356.02
  5. Step 5: Solve for x
    x = 471,840,356.02/30,156.18
  6. Step 6: Final answer
    x = 15,646.56

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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.