Home / 15,374.16-21,208.05-10,278.45

Finding the Fourth Proportional to 15,374.16, 21,208.05 and 10,278.45

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Solution

The fourth proportional to 15,374.16, 21,208.05 and 10,278.45 is: 14,178.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.16 : 21,208.05 = 10,278.45 : x
  2. Step 2: Convert to fraction form
    15,374.16/21,208.05 = 10,278.45/x
  3. Step 3: Cross multiply
    15,374.16x = 21,208.05 × 10,278.45
  4. Step 4: Simplify right side
    15,374.16x = 217,985,881.52
  5. Step 5: Solve for x
    x = 217,985,881.52/15,374.16
  6. Step 6: Final answer
    x = 14,178.72

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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.