Home / 18,683,639.82-25,783,439.02-10,423,703.40

Finding the Fourth Proportional to 18,683,639.82, 25,783,439.02 and 10,423,703.40

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Solution

The fourth proportional to 18,683,639.82, 25,783,439.02 and 10,423,703.40 is: 14,384,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,639.82 : 25,783,439.02 = 10,423,703.40 : x
  2. Step 2: Convert to fraction form
    18,683,639.82/25,783,439.02 = 10,423,703.40/x
  3. Step 3: Cross multiply
    18,683,639.82x = 25,783,439.02 × 10,423,703.40
  4. Step 4: Simplify right side
    18,683,639.82x = 268,758,920,976,466.69
  5. Step 5: Solve for x
    x = 268,758,920,976,466.69/18,683,639.82
  6. Step 6: Final answer
    x = 14,384,719.66

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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.