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Finding the Fourth Proportional to 35,530.80, 53,315.40 and 15,812.40

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Solution

The fourth proportional to 35,530.80, 53,315.40 and 15,812.40 is: 23,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,530.80 : 53,315.40 = 15,812.40 : x
  2. Step 2: Convert to fraction form
    35,530.80/53,315.40 = 15,812.40/x
  3. Step 3: Cross multiply
    35,530.80x = 53,315.40 × 15,812.40
  4. Step 4: Simplify right side
    35,530.80x = 843,044,430.96
  5. Step 5: Solve for x
    x = 843,044,430.96/35,530.80
  6. Step 6: Final answer
    x = 23,727.14

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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.