Home / 26,931.32-40,397.00-12,888.05

Finding the Fourth Proportional to 26,931.32, 40,397.00 and 12,888.05

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Solution

The fourth proportional to 26,931.32, 40,397.00 and 12,888.05 is: 19,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.32 : 40,397.00 = 12,888.05 : x
  2. Step 2: Convert to fraction form
    26,931.32/40,397.00 = 12,888.05/x
  3. Step 3: Cross multiply
    26,931.32x = 40,397.00 × 12,888.05
  4. Step 4: Simplify right side
    26,931.32x = 520,638,289.42
  5. Step 5: Solve for x
    x = 520,638,289.42/26,931.32
  6. Step 6: Final answer
    x = 19,332.08

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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.