Home / 42,831.07-64,261.81-19,136.44

Finding the Fourth Proportional to 42,831.07, 64,261.81 and 19,136.44

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Solution

The fourth proportional to 42,831.07, 64,261.81 and 19,136.44 is: 28,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831.07 : 64,261.81 = 19,136.44 : x
  2. Step 2: Convert to fraction form
    42,831.07/64,261.81 = 19,136.44/x
  3. Step 3: Cross multiply
    42,831.07x = 64,261.81 × 19,136.44
  4. Step 4: Simplify right side
    42,831.07x = 1,229,742,271.36
  5. Step 5: Solve for x
    x = 1,229,742,271.36/42,831.07
  6. Step 6: Final answer
    x = 28,711.46

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1.5x scale

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.