Home / 19,883.74-27,439.58-10,931.40

Finding the Fourth Proportional to 19,883.74, 27,439.58 and 10,931.40

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Solution

The fourth proportional to 19,883.74, 27,439.58 and 10,931.40 is: 15,085.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.74 : 27,439.58 = 10,931.40 : x
  2. Step 2: Convert to fraction form
    19,883.74/27,439.58 = 10,931.40/x
  3. Step 3: Cross multiply
    19,883.74x = 27,439.58 × 10,931.40
  4. Step 4: Simplify right side
    19,883.74x = 299,953,024.81
  5. Step 5: Solve for x
    x = 299,953,024.81/19,883.74
  6. Step 6: Final answer
    x = 15,085.34

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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.