Home / 28,090.52-42,130.10-10,315.08

Finding the Fourth Proportional to 28,090.52, 42,130.10 and 10,315.08

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Solution

The fourth proportional to 28,090.52, 42,130.10 and 10,315.08 is: 15,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.52 : 42,130.10 = 10,315.08 : x
  2. Step 2: Convert to fraction form
    28,090.52/42,130.10 = 10,315.08/x
  3. Step 3: Cross multiply
    28,090.52x = 42,130.10 × 10,315.08
  4. Step 4: Simplify right side
    28,090.52x = 434,575,319.67
  5. Step 5: Solve for x
    x = 434,575,319.67/28,090.52
  6. Step 6: Final answer
    x = 15,470.53

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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.