Home / 15,131.16-20,870.64-9,152.52

Finding the Fourth Proportional to 15,131.16, 20,870.64 and 9,152.52

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Solution

The fourth proportional to 15,131.16, 20,870.64 and 9,152.52 is: 12,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.16 : 20,870.64 = 9,152.52 : x
  2. Step 2: Convert to fraction form
    15,131.16/20,870.64 = 9,152.52/x
  3. Step 3: Cross multiply
    15,131.16x = 20,870.64 × 9,152.52
  4. Step 4: Simplify right side
    15,131.16x = 191,018,950.01
  5. Step 5: Solve for x
    x = 191,018,950.01/15,131.16
  6. Step 6: Final answer
    x = 12,624.21

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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.